<p>[Position Overview]<br />A global organization is seeking a skilled AI Engineer to integrate advanced AI solutions into its Cyber Threat Intelligence (CTI) Platform. The role focuses on leveraging AI technologies, especially Large Language Models (LLMs), to enhance threat detection, automate analysis, and improve the efficiency of cybersecurity operations.<br /><br />[Key Responsibilities]<br />- Design and implement AI-powered solutions using APIs (e.g., OpenAI, Google AI) and AI models.<br />- Develop APIs, microservices, and data pipelines for integrating AI tools into the CTI platform.<br />Enhancing Threat Intelligence<br /><br />- Automate data extraction and analysis via Natural Language Processing (NLP)<br />- Collaborate with analysts and engineers to optimize workflows using AI for malware analysis, vulnerability assessments, and incident response.<br />- Automating Report Production<br /><br />- Build AI-driven tools for generating reports, dashboards, and summaries.<br />- Personalize intelligence reports tailored to specific stakeholders.<br />- Model Evaluation & Improvement<br /><br />- Assess AI model performance using metrics and refine solutions based on feedback.<br />- Stay updated on AI developments to identify new opportunities for implementation.<br /><br />[Required Skills]<br />- Bachelor's degree in Computer Science, AI, Cybersecurity, Machine Learning, or related fields.<br />- 3+ years of experience in developing and deploying AI/ML solutions.<br />- Proficiency in Python and AI/ML frameworks (e.g., TensorFlow, PyTorch, scikit-learn).<br />- Familiarity with AI APIs and Natural Language Processing (NLP) tools.<br />- Understanding of machine learning algorithms and cybersecurity concepts.<br /><br />[Preferred Skills]<br />- Advanced degree (Master's or Ph.D.) in relevant fields.<br />- Experience with cloud platforms (e.g., AWS, Azure), Docker/Kubernetes, and big data technologies.<br />- Familiarity with threat intelligence platforms, MLOps practices, or SIEM systems.<br />- Contributions to open-source projects.<br />- Knowledge of graph databases and network analysis.</p><p>Reference Number: 06940-0013248717</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy" target="_blank">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/WGlueXUuTGluLjMyNzYwLjEwODk4QHJoaWpwLmFwbGl0cmFrLmNvbQ.gif">
<p> </p><p>Selling points</p><ul><li>International team structure: half of the engineers are foreigners and interview process is in English</li><li>Attractive AI products widely used by clients in Japan</li><li>Abundant learning opportunities; you can expect to do different work in a close team</li></ul><p>Company Profile</p><ul><li>My client is a company that provides AI-based accounting efficiency solutions. The product has been used widely by major companies.</li></ul><p>The Role</p><ul><li>AI model design, related system development</li><li>Continuous R&D operation of technical issues in accounting forms (including data) and new R&D</li><li>Character detection and recognition from accounting certificate holders (including data)</li><li>Structuring, classification, and information extraction from accounting forms (including data)</li><li>Importing scanned and photographed accounting certificate holders (including data), pre-processing such as distortion correction</li><li>Consulting on annotation technology related to computer vision</li></ul><p>Your Skills</p><ul><li>Knowledge of machine learning and deep learning, especially in the field of computer vision</li><li>Practical knowledge of programming, algorithms, and data structures</li><li>Research and development experience in natural language processing at a university or company, especially research and development related to document analysis</li><li>Relevant experience in designing AI models, implementing systems, and reproducing them from scratch by referring to related papers, etc.</li><li>Software implementation skills required to verify new methods</li><li>Experience in implementing and evaluating models using ML libraries such as PyTorch and Tensorflow</li><li>English proficiency sufficient to read and write papers and technical documents, and to converse in specialized fields</li><li>Japanese proficiency sufficient to analyze Japanese texts</li><li>Research experience in AI-related CV or NLP fields, and experience writing papers</li></ul><p>Salary</p><ul><li>9,000,000 yen - 12,000,000 yen</li></ul><p>Location</p><ul><li>Tokyo</li></ul><p>Reference number : 06940-0013222039</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/TmFuY3kuWXVhbi43NDUzNy4xMDg5OEByaGlqcC5hcGxpdHJhay5jb20.gif">
<p><strong>Selling points</strong></p><p><Why This Role is Perfect for You></p><ul><li>Fully Remote Flexibility: Work from anywhere in Japan, with the option to join team sessions at a Tokyo office if you choose-collaboration is encouraged, never mandated.</li><li>Cutting-Edge Product: Shape the frontend for an AI Data Platform used by leading manufacturers. Your work will directly impact how industrial data is leveraged worldwide.</li><li>Modern Tech Stack: TypeScript, React, Apollo, Next.js, WebGL, WebAssembly, and more. Work with the latest tools and frameworks to solve complex, meaningful problems.</li><li>Technical Leadership: Lead technology selection, architectural decisions, and technical strategy for a rapidly scaling product and organization.</li><li>Collaborative, Global Team: Work with passionate engineers from Japan and abroad. English is the main language for many teams, and you'll be part of a diverse, supportive environment.</li><li>Real Impact: Help deliver products that change workstyles and create societal value by transforming industrial structures.</li><li>Professional Growth: Gain experience scaling products globally, solving challenging problems, and contributing to a mission-driven organization.</li></ul><p><strong>C</strong><strong>ompany Profile</strong></p><ul><li>Our client is a rapidly growing, product-driven SaaS company, recognized for revolutionizing manufacturing workflows with advanced data and machine learning.</li><li>With a multinational, engineering-centric culture and a strong Tokyo presence, you'll enjoy the freedom of full remote work anywhere in Japan, plus the option to collaborate in a modern Tokyo office for team synergy.</li></ul><p><strong>The Role</strong></p><p><What You'll Do></p><ul><li>Lead frontend architecture and technology selection for the AI Data Platform and related products.</li><li>Build sustainable, maintainable frontend applications with a focus on long-term operability.</li><li>Rapidly iterate and validate product features, collaborating closely with designers to enhance UI/UX.</li><li>Design and implement reusable UI components and standardize frontend development practices.</li><li>Evaluate and integrate new technologies, frameworks, and middleware as the team scales.</li><li>Provide technical leadership, mentor team members, and align technical strategy with business goals.</li></ul><p><strong>Y</strong><strong>our Skills</strong></p><p><What You Bring></p><ul><li>7+ years of hands-on frontend development experience for web applications.</li><li>Advanced proficiency in TypeScript and experience building reusable UI components.</li><li>Proven track record leading technology selection, requirements definition, and frontend architectural design.</li><li>Experience working with modern frameworks (React, Next.js, Apollo, etc.) and familiarity with SSR, CSR, SSG, or PWA is a plus.</li><li>Strong communication skills in English (business-level or above).</li><li>Currently residing in Japan with a valid working visa.</li><li>A mindset aligned with the mission to "unleash the potential of manufacturing," with ownership, positivity, and a collaborative, respectful approach to problem-solving.</li><li>(Preferred) Experience with large-scale service development, backend technologies (Node.js), BFF (GraphQL/Apollo), and optimizing web performance.</li><li>(Preferred) Conversational-level Japanese (N2 or above), as communication is a mix of Japanese and English.</li></ul><p><strong>Salary</strong></p><ul><li>7,000,000 yen - 10,000,000 yen</li></ul><p><strong>Location</strong></p><ul><li>Tokyo</li></ul><p>Reference number: 06940-0013211509</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/S2hhbmcuTGUuMDg1NDkuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
<p><strong>Selling points</strong></p><ul><li>Drive innovation: The Product, Platform & Engineering team designs, builds, and manages our core platforms.</li><li>Global collaboration: Work with top engineering teams from around the world in a diverse and highly skilled team.</li><li>Cross-functional teamwork: Collaborate with sales, product, engineering, and operations to build, test, launch, and improve data products.</li><li>Growth potential: As the team expands, you'll have the chance to step up as a team leader.</li></ul><p><strong>C</strong><strong>ompany Profile</strong></p><ul><li>My client is a leader in digital media and performance marketing, specializing in personalized advertising and promotions for consumer-packaged goods brands, retailers, and agencies. They help stores and brands learn what shoppers like by looking at what people buy.</li></ul><p><strong>The Role</strong></p><ul><li>In this role, you'll enjoy the challenge of improving platforms for apps, data, and AI, helping shape the technology that drives our business forward in Japan. You'll design cloud solutions, lead DevOps and DataOps teams, and make sure our platforms are reliable, scalable, and always getting better. You'll collaborate with various teams to solve complex challenges exploring and experimenting with new ideas. Whether troubleshooting, automating tests, setting standards, or guiding teams, your work directly shapes how our products grow and please customers.</li></ul><p><strong>Y</strong><strong>our Skills</strong></p><ul><li>If you're passionate about building great software that helps businesses grow, this could be your ideal next step. We're looking for someone with over six years of hands-on experience with cloud platforms (Microsoft Azure is a must) along with DevOps, Java, Kubernetes, and both SQL and NoSQL databases. You should be comfortable working across the entire tech stack and have experience with big data, microservices, APIs and automated testing as well as collaborating in Agile environments across global teams.</li></ul><p><strong>Salary</strong></p><ul><li>9,000,000 yen - 12,000,000 yen</li></ul><p><strong>Location</strong></p><ul><li>Tokyo</li></ul><p>Reference number: 06940-0013238708</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/S29qaS5ZYWdpbnVtYS41ODcxMS4xMDg5OEByaGlqcC5hcGxpdHJhay5jb20.gif">
<p><strong>Selling Point</strong><br /> <br />Full Remote<br /> </p><p><strong>Client Profile</strong><br /> <br />This company delivers advanced security solutions and risk management services to both domestic and international businesses and organizations, leveraging cutting-edge technology and specialized expertise.<br /> <br /><strong>The Role</strong><br /> <br />Engaged in research and development related to AI security, and you will be responsible for a wide range of tasks, from investigative research to the development of products and services.<br /> <br /><strong>Salary </strong><br /> <br />9,000,000 yen－13,000,000<br /><br /></p><p><strong>Location</strong><br /> <br />Full Remote<br /> <br /> <br /> <br />Reference Number：06940-0013244585<br /> </p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/RmFicml6aW8uRnVtYWdhbGxpLjk4MzAxLjEwODk4QHJoaWpwLmFwbGl0cmFrLmNvbQ.gif">
<p>【Principal Backend Engineer】We are looking for a technical leader to play a central role in a fast-growing SaaS product!</p><ul><li>A fast-growing enterprise SaaS product that is being adopted by major companies. We are looking for a Principal Backend Engineer to lead the backend development and raise the team's technical capabilities and quality.</li><li>This is not just a "development lead," but a position where you can make decisions and exert influence across the three axes of technology, business, and organization.</li></ul><p><strong>Selling points</strong></p><ul><li>Technology and design decision-making authority to support mid- to long-term product growth</li><li>Bilingual engineering organization at the intersection of local and global</li><li>Deep involvement in strategy with an understanding of both product development and business</li><li>Flexible work style with flextime and remote work OK</li></ul><p><strong>The Role</strong></p><ul><li>Develop and improve back-end functionality and design reviews for our SaaS products</li><li>Improve code quality and design capabilities of the entire team and build a review culture</li><li>Technical and strategic collaboration with stakeholders (product, sales, support)</li><li>Lead high-quality localization for the Japanese market</li><li>Improve development process, Team development, formulation of design guidelines</li><li>Make and lead decisions with a mid- to long-term perspective, including technology selection and infrastructure design</li></ul><p><strong>Technology Stacks</strong></p><ul><li>Front-end: React, Remix, Tailwind CSS</li><li>Back-end: Go (Goa), Python</li><li>Infrastructure and CI/CD: AWS, GCP, Azure, Vercel, Terraform Cloud, GitHub</li><li>Database: DynamoDB,. OpenSearch, Databricks</li><li>Authentication infrastructure: Auth0, Amazon Cognito</li><li>Knowledge and documentation: Notion, Google Workspace</li><li>Communication: Slack, Linear</li></ul><p><strong>Required Skills and Experience</strong></p><ul><li>10+ years of back-end development experience (working experience in Go or Python preferred)</li><li>5+ years of experience leading development teams (including code review, design guidance, and training)</li><li>2+ years of practical communication (spoken and written) in English</li></ul><p><strong>Welcomed Skills and Knowledge</strong></p><ul><li>Experience developing and operating enterprise software products</li><li>Experience utilizing Japanese natural language processing, search algorithms, and AI technologies</li><li>Deep knowledge of data infrastructure design, ETL, and data governance</li></ul><p><strong>What we look for in a person</strong></p><ul><li>You can focus on the success and growth of the team as much as your own achievements</li><li>You want to be involved in the product from both a technical and business perspective</li><li>You have the flexibility to enjoy the speed and change unique to startups</li><li>You are interested in the future of BtoB SaaS and enterprise data in Japan</li><li>You find a mission-driven environment challenging You are interested in the future of BtoB SaaS and enterprise data in Japan.</li></ul><p><strong>Work Environment</strong></p><ul><li>Working hours: Full remote available (hybrid system with option to come in 1-3 days a week)</li><li>Office location: Minato-ku, Tokyo (Hamamatsucho area)</li><li>Employment status: Full-time</li><li>Working hours: Flextime system (core hours 11:00-15:00)</li><li>Holidays: Weekends, holidays, annual paid vacation, special leave upon hire</li></ul><p>Reference number：06940-0013260019</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/U2hpbWFtdXJhLlNoaW5vYnUuMTgyNDAuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
<p>Selling Points</p><ul><li>You will work on impactful social issue from day 1</li><li> Flexible working policies</li><li>International work environment</li></ul><p>Company Profile</p><ul><li>The client is working on innovative solutions in civil engineering industry.</li></ul><p>The Role</p><ul><li>Help identify the technical challenges related to the operations of our clients.</li><li>Work collaboratively with the rest of the AI team, as well as other teams and departments within the company, to identify, propose, explore and create ways to tackle the challenges using AI, ML or optimization algorithms as per your professional expertise.</li><li>Be involved in the whole lifecycle of an AI solution.</li></ul><p>Your Skills</p><ul><li>Master's in Deep Learning, Machine Learning or similar field, and at least 2 years experience building Machine Learning Models</li><li>Thorough understanding of modern ML technologies, models, methods and its fundamentals.<br />Good grasp of data analytics.</li><li>Experience working with Python, Pytorch and related modern popular ML libraries.</li><li>Industrial or Academic experience working with: Point Clouds/NERFs, Diffusion Models, Transformers, (Deep)</li><li>Reinforcement Learning, Evolutionary Algorithms</li><li>Experience designing, building, or optimizing models related to the above</li></ul><p>Salary</p><ul><li>9,000,000 yen - 12,000,000 yen</li></ul><p>Location</p><ul><li>Tokyo</li></ul><p>Reference number : 06940-0013240560</p><p><span data-teams="true"> </span></p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/TmFuY3kuWXVhbi40ODk1MS4xMDg5OEByaGlqcC5hcGxpdHJhay5jb20.gif">
<p>Fullstack Platform Engineer<br />Location: Tokyo (Remote First)<br /><br />Interested in rolling up your sleeves to build an engine behind an AI-powered cybersecurity platform? We're looking for a seasoned Fullstack Platform Engineer to help us process billions of security events in real time, weave in smart analytics, and create clear, data-rich interfaces that keep enterprises one step ahead of complex security threats.<br /><br />What You'll Do<br />-Architect and implement scalable backend services and ETL pipelines (Kafka, ELK) in Rust, Go, Python, and TypeScript.<br />-Collaborate with ML and security teams to embed AI-driven threat detection and optimize system performance for millions of users.<br />-Build responsive front-end dashboards and tools using modern JavaScript frameworks.<br />-Enforce robust security measures (OAuth 2.0, encryption) and compliance with industry standards.<br />-Troubleshoot full-stack issues across cloud-native microservices, containers (Docker/K8s), and observability tools (Datadog, Vector).<br /><br />You Bring<br />-Bachelors in CS or related, with 5+ years in fullstack development.<br />-Proficiency in Rust and familiarity with Go, Python, Java, TypeScript.<br />-Strong cloud, microservices, and database (SQL/NoSQL) experience.<br />-A quick learner, excellent communicator, and a genuine passion for cybersecurity.<br /><br />Why Join Us?<br />Enjoy a collaborative environment, fully remote work arrangements, and a dedicated learning budget for certifications and conferences. Help us push the boundaries of cybersecurity innovation!</p><p> </p><p>Salary: 8M - 12M</p><p>Reference Number: 06940-0013251295</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/S29qaS5ZYWdpbnVtYS4wMzczMC4xMDg5OEByaGlqcC5hcGxpdHJhay5jb20.gif">
<p><strong>C</strong><strong>ompany Profile</strong></p><ul><li>A European company specializes in developing and delivering innovative therapies for rare and severe diseases. It's a leader in addressing complex medical challenges through targeted treatments. It actively partners with healthcare professionals, patient advocacy groups, and authorities to ensure those affected by rare diseases receive timely and effective medical support.</li></ul><p><strong>The Role</strong></p><ul><li>Lead the strategy, planning, and execution of data and AI initiatives.</li><li>Design and implement data solutions that support business objectives.</li><li>Manage cross-functional teams and collaborate with internal and external partners.</li><li>Provide expert guidance on data architecture, governance, and analytics.</li><li>Ensure alignment with organizational goals and compliance requirements.</li></ul><p><strong>Y</strong><strong>our Skills</strong></p><ul><li>Minimum 8 years' experience in data engineering, analytics, or AI/ML delivery.</li><li>Strong technical background with experience in cloud platforms, data lakes, and visualization tools.</li><li>Knowledge of data privacy regulations and interoperability standards.</li><li>Proven ability to lead teams and manage complex projects.</li><li>Bachelor's degree in a relevant technical field; advanced degree preferred.</li></ul><p><strong>Salary</strong></p><ul><li>17,000,000 yen - 20,000,000 yen</li></ul><p><strong>Location</strong></p><ul><li>Tokyo</li></ul><p>Reference number : 06940-0013236009</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/TGluaC5EYW5nLjI3ODk1LjEwODk4QHJoaWpwLmFwbGl0cmFrLmNvbQ.gif">
<p><strong>Company Profile</strong></p><p>[Backend Engineer] Seeking a core member to support the growth of our enterprise SaaS product!<br />We are a leading data intelligence platform that is being adopted by major Japanese companies one after another. We are looking for a Backend Engineer to support the quality of our SaaS product, which is the core of our SaaS product, and help it evolve further.</p><p>Although we are a fast-growing startup, we have already developed and provided products that have been implemented by many enterprise customers, including prime listed companies. This is an ideal field for those who want to focus on "quality" as an engineer, and for those who seek both the speed and professionalism of a startup.<br /><br /></p><p><strong>Selling points</strong></p><ul><li>The value of being a Japanese engineer who is serious about usability for Japanese users</li><li>Collaboration with a global team where English is the common language</li><li>Work on the core of product development and experience continuous improvement and growth</li><li>Full Remote / Work from home Full remote or in-coming options. Flexible work style and a culture based on trust.</li></ul><p><strong>The Role</strong></p><ul><li>Development and improvement of back-end functionality with a focus on Golang</li><li>Localization proposals and implementation for an intuitive and easy-to-understand UX for Japanese users</li><li>Collaboration with other teams (front-end, PM, etc.) and technical documentation</li><li>Active participation in technical discussions and improvement proposals within the team</li><li>Implementation and review with high code quality in mind</li></ul><p><strong>Technology Stacks</strong></p><ul><li>Frontend: React, Remix, Tailwind CSS</li><li>Backend: Go (Goa framework)</li><li>Infrastructure: AWS, Vercel, Terraform Cloud</li><li>Authentication: Auth0, Cognito</li><li>Database: DynamoDB, OpenSearch</li><li>CI/CD: GitHub</li><li>Communication: Slack, Linear, Notion</li></ul><p><strong>Required Skills</strong></p><ul><li>Back-end development experience: 3+ years (working experience with Golang a plus)</li><li>Experience working in English (including speaking, reading and writing): 2+ years</li></ul><p><strong>Skills and Experience</strong></p><ul><li>Implementation of Japanese search functionality (e.g. Elasticsearch)</li><li>Knowledge of data management, analysis, and engineering</li><li>Experience developing and operating BtoB SaaS products</li><li>Experience working in a startup environment</li><li>Computer science degree</li></ul><p><strong>We welcome people like this</strong></p><ul><li>People who value teamwork and can take initiative</li><li>People who want to provide great value to society through Japan's first SaaS product</li><li>People who enjoy the discretion and speed of a startup</li><li>People who are excited about the future of enterprise data management</li><li>People who share our mission and vision You are excited about the future of enterprise data management You share our mission and vision</li></ul><p><strong>Location</strong></p><ul><li>In principle, remote work (in Japan)</li><li>Office work in Hamamatsucho, Minato-ku, Tokyo (nearest: Hamamatsucho Station) is also possible if desired.</li></ul><p>Reference number：06940-0013260015</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/U2hpbWFtdXJhLlNoaW5vYnUuODE1MDUuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
<p><strong>About the Opportunity</strong></p><p>Are you ready to drive innovation in a rapidly scaling tech company with a global vision? We are seeking a mid to senior-level software engineer to join a dynamic team at the heart of Tokyo's thriving product development scene. This is your chance to architect and deliver cutting-edge solutions that power real-world impact, all within a collaborative, international environment.</p><p><strong>What's In It For You</strong></p><ul><li><strong>Shape the Future:</strong> Lead the creation of new digital products from the ground up, influencing technology choices and product direction from day one.</li><li><strong>Global Collaboration:</strong> Work alongside talented professionals from diverse backgrounds, with English as the primary language of communication.</li><li><strong>Growth & Ownership:</strong> Be empowered to take initiative, drive technical decisions, and help scale a high-performing engineering team.</li><li><strong>Competitive Rewards:</strong> Attractive annual compensation (8.5M-12M JPY), regular salary reviews, and stock options to share in the company's success.</li><li><strong>Flexible Work:</strong> Hybrid work style with core hours and the freedom to manage your own schedule. Occasional in-person sessions foster team spirit and innovation.</li></ul><p><strong>Your Role</strong></p><ul><li>Spearhead the end-to-end development of new applications, from technology selection and domain modeling to system architecture and deployment.</li><li>Collaborate with cross-functional teams-product managers, designers, and engineers-to deliver high-impact solutions.</li><li>Mentor and guide team members, instilling best practices and a culture of technical excellence.</li><li>Contribute to the evolution of a global engineering organization, helping shape processes and standards as the company scales.</li></ul><p><strong><br /> What We're Looking For</strong></p><p><strong>Must-Have Skills & Experience:</strong></p><ul><li>5+ years building and deploying web applications on cloud platforms (GCP, AWS, or Azure).</li><li>Proven leadership in shipping projects with teams of 5+ engineers.</li><li>Deep expertise in system design, architecture, and delivering robust, scalable solutions.</li><li>Experience working with multiple programming languages and frameworks.</li><li>Ability to communicate complex technical ideas fluently in English.</li></ul><p><strong>Preferred Qualifications:</strong></p><ul><li>Hands-on experience with Docker-native infrastructure and CI/CD pipelines.</li><li>Solid background in backend development using statically typed languages (e.g., Rust, TypeScript, Node.js).</li><li>Familiarity with microservices, asynchronous processing, and secure web application design.</li><li>Exposure to modern frontend frameworks (React.js) and domain-driven design.</li><li>Track record of technical leadership in fast-paced, ambiguous environments.</li></ul><p><strong>Who Thrives Here</strong></p><ul><li>Visionaries who are passionate about transforming industries through technology.</li><li>Problem-solvers who embrace challenges and take ownership of outcomes.</li><li>Team players who foster open, respectful communication and thrive in multicultural settings.</li><li>Lifelong learners eager to explore new tools, languages, and design patterns.</li></ul><p><strong>Tech Stack Snapshot</strong></p><ul><li><strong>Frontend:</strong> TypeScript, React, Next.js</li><li><strong>Backend:</strong> Rust (axum), TypeScript, Node.js (Express, Fastify, NestJS)</li><li><strong>Infrastructure:</strong> Docker, Kubernetes, Google Cloud, Cloudflare, Istio</li><li><strong>DevOps:</strong> GitHub, ArgoCD, Terraform, Datadog, Sentry</li><li><strong>Data:</strong> PostgreSQL, BigQuery, AlloyDB</li><li><strong>APIs:</strong> GraphQL, REST, gRPC</li><li><strong>Collaboration:</strong> Slack, Discord, JIRA, Miro</li></ul><p><strong>Salaary</strong></p><p>8 - 10 million Yen</p><p><strong>Location</strong></p><p>Tokyo</p><p>Reference No.: 06940-0013244592 </p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/S2hhbmcuTGUuOTI3NzkuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
<p><strong>Company Profile</strong></p><ul><li>Our client is looking for a Cloud infrastructure and platform engineer for thier cloud system.</li></ul><p><strong>The Role</strong></p><ul><li>This role will be responsible for the engineering of Cloud Infrastructure Platforms to provide robust, reliable and cost-efficient Platform so that we can deliver the best experience for our growing customers base.</li><li>Main Responsibilities Architect and build a robust, scalable and stable infrastructure</li><li>Architect and build Infrastructure that is easily maintainable during patching and upgrades</li><li>Architect and build Infrastructure with AWS regional level failure tolerance</li><li>Work together with our Security Engineers to provision a secure Infrastructure Automations for AWS Deployments to ensure fast delivery of Cloud Services to our developers</li><li>Provide through Automations means for developers to easily deploy resources on AWS.</li><li>Design and Build Reliable Infrastructure: Create systems that are strong, stable, and can grow as needed.</li><li>Easy Maintenance: Make sure the infrastructure is simple to update and patch without causing problems.</li><li>High Availability: Build systems that can keep running even if there are failures in an entire AWS region.</li><li>Automation for Fast Delivery: Automate AWS deployments so developers can quickly access the cloud services they need.</li><li>Developer-Friendly Tools: Provide automated solutions so developers can easily set up and manage AWS resources.</li></ul><p><strong>Your Skills </strong></p><ul><li>More than 5 years of technical experience in Cloud based Infrastructure Platform</li><li>Ability to demonstrate high degree of ownership in a Production environment</li><li>Good understanding of Cloud security best practices and payment industry compliance standards</li><li>Expertise in designing, building and troubleshooting large-scale streaming and distributed systems using Kafka.</li><li>Expertise in building Robust platforms based on NoSQL/KVS datastores like DynamoDB, Opensearch/ Elasticsearch and Redis.</li><li>Experience in Cloud infrastructure and platform systems availability, performance and cost management Extensive technical hands-on experience of Computing, Storage and Analytical Services on Cloud(AWS)</li><li>Experience with IAC tools in AWS such as Terraform, CloudFormation, CDK Experience with Cloud Services Monitoring, Detection and Response Experience in Cloud Services Performance Tuning, cost controls and management Experience in Cloud Infrastructure Service patching and upgrades PayPay DevOps emphasize automation.</li><li>Demonstrated skill with the following are required: Python ShellScripting Go/ Rust (optional) Have excellent oral, written, verbal and interpersonal communication skills. Preferred Qualifications Bachelor's degree and above in a technology related field Experience with other cloud service providers (e.g GCP, Azure)</li><li>Experience with Kubernetes (CKA, CKAD or CKS)</li><li>Experience with Event-Driven Architecture (Kafka preferred)</li><li>Experience using and contributing to Open Source tools</li><li>Experience in managing IT compliance and security risk Published papers / blogs / articles - Relevant and verifiable certifications</li><li>Bilingual in English and Japanese is nice to have, but not required. Proficiency in either language is fine. </li></ul><p>Tech Stack</p><ul><li>AWS: VPC, EC2, ECS, EKS, Lambda, Cloudfront, MWAA, RDS, ElastiCache, DynamoDB, Opensearch, S3, CloudWatch, Cognito, SQS, KMS, Secret Manager, KMS, MSK, CodeCommit, CodeBuild, CodeDeploy, CodePipeline, CloudFormation and other services Terraform, Github Actions, Prometheus, Grafana, Dynatrace, Atlantis, ArgoCD, OpenTelemetry</li></ul><p><strong>Location </strong></p><p>Tokyo</p><p><strong>Salary</strong></p><p>8 - 12 million yen</p><p> </p><p>Reference Number: 06940-0013244587</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/V2F0dW55dS5TaXJpcGFpcm9qLjgzNTM1LjEwODk4QHJoaWpwLmFwbGl0cmFrLmNvbQ.gif">
<p><strong>Shape the Future of Digital Payments as a Senior Backend Engineer</strong><br /><br />Are you ready to make a real impact on how millions of people shop online? Join a fast-growing Fintech innovator in Tokyo that's redefining the checkout experience. Here, your expertise will directly influence the evolution of digital payments-without the need for credit cards.<br /><br />If you're passionate about building robust systems and eager to see your work in action, this is your chance.<br /><br /><strong>What Makes This Opportunity Stand Out?</strong></p><ul><li>Global, Inclusive Team: Collaborate with talented professionals from over 30 countries. Diversity isn't just a buzzword-it's the foundation of our creativity and success.</li><li>Flexible Workstyle: Choose where and when you work best. Whether you prefer a fully remote setup or the energy of our Tokyo office, you have full autonomy from day one.</li><li>Tech-Forward Environment: Tackle complex challenges using modern technologies like Rust and Scala, Kafka, and a microservices architecture. We encourage experimentation and continuous learning.</li><li>Growth & Ownership: Be involved in every stage of the software lifecycle, from concept to deployment. Your ideas matter and your leadership will help shape both products and the team.</li><li>Supportive Culture: We value open communication, knowledge sharing, and a healthy work-life balance. Enjoy complete flex time, weekends off, and a comprehensive benefits package-including retirement and pension plans.</li></ul><p><strong>Your Role</strong></p><ul><li>Lead and contribute to the design and development of scalable backend systems using Scala and other modern languages.</li><li>Drive projects from requirements gathering through to implementation, testing, and operation.</li><li>Collaborate with cross-functional teams to integrate with external APIs and financial products.</li><li>Mentor team members and help set technical direction.</li><li>Continuously improve system reliability, security, and performance.</li></ul><p><strong>What We're Looking For</strong></p><ul><li>Solid experience in backend development with languages such as Scala, Java, Kotlin, Rust or interest in Functional Programming</li><li>Proven ability to design new systems and enhance existing applications.</li><li>Strong communication skills in English; Japanese is a plus but not required.</li><li>Experience in Fintech or with functional programming is highly valued.</li><li>A proactive, collaborative mindset and a drive to make a difference.</li></ul><p><strong>Salary</strong></p><ul><li>8 million yen - 12 million yen</li></ul><p><strong>Location</strong></p><ul><li>Tokyo</li></ul><p>Reference number : 06940-0013257393</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/S2hhbmcuTGUuNzMwNjkuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
<p><strong>Company Profile</strong></p><ul><li>My client is a tech start-up in Tokyo. With strong support from parent company and investors, it seeks to bring DX to construction world.</li></ul><p><strong>The Role</strong></p><ul><li>This role focuses on backend development for a platform providing core APIs (authentication, user/company management, data exchange), system architecture design, and collaboration with solution teams.</li><li>Experience in full-cycle web service development using languages like Node.js, Go, or Python and team-based Git workflows is required.</li></ul><p><strong>Your Skills</strong></p><ul><li>5 years or longer experience as software engineer</li><li>Business or fluent Japanese level</li><li>Experience designing and testing full web services</li><li>Commercial development experience in Node.js, Go, or Python</li><li>Team development using Git</li><li>Willingness to learn new languages if needed</li><li>Experience in requirement definition and system design</li><li>Backend development in TypeScript and Nest.js</li><li>Familiarity with Scrum methodology</li></ul><p><strong>Location </strong><br /> <br /> Tokyo<br /> <br /> <strong>Salary</strong><br /> <br /> 8 - 12 million yen<br /> <br /> <strong>Selling points</strong></p><ul><li>Stable business with rich resource and strong support from parent companies</li><li>Hybrid working style: 2 days in office</li><li>Fast, agile wat of working, you are going to see progress every month</li><li>Very friendly and supportive co-worker and leaders</li></ul><p><br /> Reference Number: 06940-0013231160</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/TmFuY3kuWXVhbi45MDU5OC4xMDg5OEByaGlqcC5hcGxpdHJhay5jb20.gif">
<p><strong>Company Profile</strong></p><ul><li>Our client is a dynamic and innovative e-commerce platform empowering businesses of all sizes to establish and manage their online stores with ease..</li></ul><p><strong>The Role</strong></p><ul><li>Engineer/ Tech Lead</li></ul><p><strong>Your Skills </strong></p><ul><li>At least 1 year of working experience in in-house services</li><li>4+ years of working experience in UI/UX design for web services</li><li>Working level skills in Figma (or Sketch, Adobe XD)</li><li>Experience working with engineers</li><li>Applicants must be able to submit a portfolio (any format is acceptable).</li></ul><p><strong>Location </strong></p><p>Tokyo</p><p><strong>Salary</strong></p><p>9 - 12 million yen </p><p> </p><p>Reference Number: 06940-0013148268</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/aXNhYWMuY2hlbmcuODczNjEuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
<p><strong>Company Profile</strong></p><ul><li>Our client is a dynamic, global fintech scale-up specializing in an in-house developed payments gateway platform. Their solution consolidates multiple payment providers - from credit cards to QR codes and bank transfers - into a seamless, one-stop platform used by over 30,000 merchants primarily in Japan, with ambitious plans for overseas expansion.</li></ul><p><strong>The Role</strong></p><p><What You'll Do></p><ul><li>Design, develop, and maintain backend features for a robust payments gateway platform.</li><li>Build scalable, fault-tolerant microservices and contribute to monolithic payment systems.</li><li>Collaborate with product managers, SRE, and commercial teams to deliver high-quality solutions.</li><li>Write automated tests, maintain CI/CD pipelines, and ensure system uptime.</li><li>Proactively identify and implement improvements, including proof-of-concept work.</li><li>Participate in code reviews and help mentor junior engineers.</li><li>Communicate openly with the team via Slack and occasional meetings, contributing to a transparent and collaborative culture.</li></ul><p><strong>Your Skills </strong></p><p>What You Bring</p><p><Technical Skills></p><ul><li>Solid foundation in computer science, ideally with a relevant degree or equivalent experience.</li><li>Hands-on experience building robust software using object-oriented principles, typically gained over several years in a professional setting.</li><li>Practical exposure to functional programming concepts-whether through Scala, Kotlin, Java (with modern features), or other functional-first languages.</li><li>Proven ability to design and implement backend systems that interact with APIs.</li><li>Comfortable working with relational databases to manage and query data efficiently.</li><li>Familiar with writing and maintaining automated tests to ensure code reliability.</li><li>Regular user of Git for version control and collaborative code review.</li></ul><p><Language & Location></p><ul><li>Business Japanese (N2/N3 level preferred) for reading documentation and occasional stakeholder communication.</li><li>Business-level English for cross-functional collaboration.</li><li>Currently residing in Japan with a valid working visa</li><li>Note: This role requires you to be physically located in Japan. Remote work from overseas is not possible.</li></ul><p><Soft Skills></p><ul><li>Self-motivated and proactive with the ability to work independently in a remote setting.</li><li>Strong communication skills, comfortable with open team discussions and transparent collaboration.</li><li>Proactive problem solver who enjoys innovation beyond routine API development.</li><li>Comfortable working in a smaller team with close stakeholder interaction.</li></ul><p><Nice to Have></p><ul><li>Experience with Agile development</li><li>Experience developing systems from scratch</li><li>Experience with messaging/event-driven architectures</li><li>Experience with NoSQL databases</li><li>Familiarity with AWS services and serverless frameworks</li><li>Experience with scalable, highly available systems</li><li>Contributions to open source projects</li><li>Background in financial services</li></ul><p><strong>Location </strong></p><p>Tokyo</p><p><strong>Salary</strong></p><p>7 - 10 million yen</p><p><strong>Selling points</strong></p><ul><li>Choose where to work within Japan: Enjoy the freedom to work from anywhere in Japan, with the option to visit our Tokyo office for monthly meetups and face-to-face collaboration.</li><li>Innovate on Cutting-Edge Payment Systems: Build and maintain a production-grade payments gateway platform that powers over 30,000 merchants, integrating credit cards, QR codes, bank transfers, and more.</li><li>Modern Tech Stack: Work with Scala, Kotlin, Java (functional programming), AWS cloud services, microservices architecture, CI/CD pipelines, and event-driven systems.</li><li>Shape the Platform's Future: Take ownership of your work, influence technical decisions, and proactively propose improvements beyond routine API development.</li><li>Grow Your Career Your Way: Whether you want to deepen your technical expertise as an individual contributor or explore leadership opportunities, you'll find a clear path with support, learning budgets, and a culture that values autonomy.</li><li>Collaborate in a Close-Knit, Flat-Hierarchy Team: With a growing engineering team of about 20 people, including dedicated leaders who understand the needs and what excites engineers, you'll be part of a highly communicative team that embraces open Slack channels and open communication.</li><li>Continuous Learning & Innovation: Participate in tech talks, proof-of-concept projects, and a culture that encourages curiosity and ownership.</li></ul><p> </p><p>Reference Number: 06940-0013217037</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/S2hhbmcuTGUuMzEwMDMuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
<p><strong>What Sets This Opportunity Apart</strong><br /><br /><span style="text-decoration: underline;">Mission with Real Impact</span>: Help transform financial services by making cashless payments more accessible and intuitive for everyone in Japan. Your work will drive a fundamental shift in how people interact with money.<br /><br /><span style="text-decoration: underline;">Freedom to Innovate</span>: Join a culture that rewards initiative, creative problem-solving, and the courage to challenge the status quo. Here, you'll help rebuild core systems from the ground up, not just tweak existing features.<br /><br /><span style="text-decoration: underline;">Career Growth & Ownership</span>: Take on enterprise-scale challenges, lead architectural decisions, and see your ideas move from concept to reality. You'll have a direct hand in expanding the company's service portfolio as it aims to become Japan's go-to fintech platform.<br /><br /><span style="text-decoration: underline;">Flexible Workstyle</span>: Enjoy true flexibility-work fully remotely from anywhere in Japan, with occasional team gatherings in Tokyo. There's no fixed office attendance, and you set your own hours for optimal work-life balance.<br /><br /><span style="text-decoration: underline;">Collaborative & Diverse Team</span>: Work alongside passionate engineers, product managers, and designers from around the world. Communication is open, and your input will always be valued.<br /><br /><strong>What You'll Do</strong><br />Collaborate across disciplines to deliver new features and elevate the user experience for a rapidly growing digital payments platform.<br />Redesign and enhance frontend architecture for scalability, maintainability, and future growth.<br />Tackle complex technical challenges as you help reimagine a system at the heart of Japan's fintech transformation.<br />Mentor peers, share knowledge, and uphold engineering best practices through code reviews and feedback.<br />Troubleshoot and resolve issues to ensure a secure, robust, and seamless product.<br /><br /><strong>Who Thrives Here</strong><br />Engineers with 5+ years of hands-on experience in JavaScript and/or TypeScript, and at least 2 years working with Vue.js (React also welcome).<br />Professionals who've led frontend projects and designed scalable architectures.<br />Those who prefer building products over following orders-problem solvers who want to leave their mark on a fast-evolving industry.<br />Candidates from product-driven backgrounds (rather than consulting or outsourcing) who value autonomy and ownership.<br />Business-level English is required; Japanese is a plus but not mandatory.<br /><br /><strong>Tech Stack Highlights</strong><br />Nuxt 3 (Vue.js 3, TypeScript), REST APIs, TanStack Query, Zod, Storybook<br />CI/CD with GitHub Actions, AWS S3/CloudFront/Route53<br />Modern collaboration tools: GitHub, Slack, Zoom, Miro, JIRA<br /><br /><strong>Why Now?</strong><br />Japan's tech sector is undergoing a digital revolution, with a critical shortage of skilled IT professionals and a surge in demand for those ready to lead modernization efforts. This is a rare chance to join a company with strong financial backing and a startup mindset-where you'll help set the standard for the next era of fintech in Tokyo and beyond.</p><p>Reference Number: 06940-0013246353</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/S2hhbmcuTGUuNTI1NDEuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
<h3 data-start="179" data-end="203">Job Responsibilities</h3><ul data-start="205" data-end="932"><li data-start="205" data-end="286"><p data-start="207" data-end="286">Collaborate with the development team to create innovative software solutions</p></li><li data-start="287" data-end="387"><p data-start="289" data-end="387">Participate in technical decision-making, including framework and programming language selection</p></li><li data-start="388" data-end="462"><p data-start="390" data-end="462">Share expertise on selected technologies and development architectures</p></li><li data-start="463" data-end="549"><p data-start="465" data-end="549">Provide support for product development and implement in-house technical solutions</p></li><li data-start="550" data-end="626"><p data-start="552" data-end="626">Develop and manage high-performance systems, databases, and applications</p></li><li data-start="627" data-end="688"><p data-start="629" data-end="688">Create high-level APIs and write clear, maintainable code</p></li><li data-start="689" data-end="756"><p data-start="691" data-end="756">Test software to ensure functionality, quality, and performance</p></li><li data-start="757" data-end="824"><p data-start="759" data-end="824">Troubleshoot, debug, and upgrade existing software as necessary</p></li><li data-start="825" data-end="882"><p data-start="827" data-end="882">Apply best practices for security and data protection</p></li><li data-start="883" data-end="932"><p data-start="885" data-end="932">Produce comprehensive technical documentation</p></li></ul><h3 data-start="934" data-end="961">Development Environment</h3><p data-start="963" data-end="1132"><strong data-start="963" data-end="977">Languages:</strong> Java, Kotlin, JavaScript, TypeScript, Go, C#, etc.<br data-start="1028" data-end="1031" /> <strong data-start="1031" data-end="1046">Frameworks:</strong> Spring, Vue.js, Nuxt.js, .NET Framework, etc.<br data-start="1092" data-end="1095" /> <strong data-start="1095" data-end="1114">Infrastructure:</strong> AWS, GCP, Azure</p><p data-start="1134" data-end="1482"><strong data-start="1134" data-end="1153">Team Structure:</strong><br data-start="1153" data-end="1156" /> Project teams typically consist of 5-8 members, including members from client development teams. Each team is supported by at least one highly skilled senior engineer to promote skill development through pair programming and other collaborative practices. This role emphasizes long-term development beyond simple coding tasks.</p><h3 data-start="1484" data-end="1508">Development Approach</h3><p data-start="1510" data-end="2061">Our approach emphasizes agile development, moving away from the traditional waterfall methodologies commonly used in Japan's financial industry. Most projects begin at the upstream stage through direct contracts, allowing high flexibility in defining "what to build." You will work closely with the client's development team to discuss and decide on technology choices. Responsibilities cover the entire software development lifecycle, including requirements analysis, design, implementation, testing, deployment, and delivering the solution to users.</p><h3 data-start="2063" data-end="2090">Required Qualifications</h3><ul data-start="2092" data-end="2410"><li data-start="2092" data-end="2252"><p data-start="2094" data-end="2163">Experience with one or more of the following frameworks or languages:</p><ul data-start="2166" data-end="2252"><li data-start="2166" data-end="2191"><p data-start="2168" data-end="2191">Spring (Java or Kotlin)</p></li><li data-start="2194" data-end="2222"><p data-start="2196" data-end="2222">Vue.js, Nuxt.js, or Quasar</p></li><li data-start="2225" data-end="2229"><p data-start="2227" data-end="2229">Go</p></li><li data-start="2232" data-end="2252"><p data-start="2234" data-end="2252">C# .NET, ASP.NET</p></li></ul></li><li data-start="2253" data-end="2329"><p data-start="2255" data-end="2329">Minimum 3 years of experience in software engineering or a related field</p></li><li data-start="2330" data-end="2410"><p data-start="2332" data-end="2410">For non-Japanese nationals: Business-level Japanese proficiency (N2 or higher)</p></li></ul><h3 data-start="2412" data-end="2440">Preferred Qualifications</h3><ul data-start="2442" data-end="2685"><li data-start="2442" data-end="2513"><p data-start="2444" data-end="2513">Hands-on experience with cloud platforms such as AWS, GCP, or Azure</p></li><li data-start="2514" data-end="2579"><p data-start="2516" data-end="2579">Proven experience working in a collaborative team environment</p></li><li data-start="2580" data-end="2618"><p data-start="2582" data-end="2618">Conversational English proficiency</p></li><li data-start="2619" data-end="2685"><p data-start="2621" data-end="2685">Participation in product development from the conceptual stage</p></li></ul><h3 data-start="2687" data-end="2714">Ideal Candidate Profile</h3><ul data-start="2716" data-end="2786"><li data-start="2716" data-end="2786"><p data-start="2718" data-end="2786">Excellent communication skills and a strong commitment to teamwork</p></li></ul><h3 data-start="2788" data-end="2808">Example Projects</h3><p data-start="2810" data-end="2982"><strong data-start="2810" data-end="2856">Development of APIs for Financial Services</strong><br data-start="2856" data-end="2859" /> Frontend: TypeScript / Angular / Ionic<br data-start="2897" data-end="2900" /> Backend: Go, Kotlin / Spring<br data-start="2928" data-end="2931" /> Authentication: OAuth 2.0 / OpenID Connect / FAPI</p><p data-start="2984" data-end="3114"><strong data-start="2984" data-end="3037">In-House Payment System Development for Retailers</strong><br data-start="3037" data-end="3040" /> Backend: Go, Java<br data-start="3057" data-end="3060" /> Infrastructure: GCP, Kubernetes (GKE), microservices</p><p data-start="3116" data-end="3285"><strong data-start="3116" data-end="3188">Development of Online-Only Financial Services for Major Institutions</strong><br data-start="3188" data-end="3191" /> Frontend: TypeScript / Vue.js<br data-start="3220" data-end="3223" /> Backend: C# / .NET Core, ASP.NET<br data-start="3255" data-end="3258" /> Authentication: OAuth 2.0</p><p data-start="3287" data-end="3404"><strong data-start="3287" data-end="3328">Modernization of Core Banking Systems</strong><br data-start="3328" data-end="3331" /> Backend: Java / Kotlin Spring<br data-start="3360" data-end="3363" /> Infrastructure: Azure / GCP (multi-cloud)</p><p data-start="3287" data-end="3404"> </p><p data-start="3287" data-end="3404">Reference Number: 06940-0013244624</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/c3VlLnRpbmcuNTA4NzUuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
<p>Are you passionate about building products that impact hundreds of millions of users? Join a team developing the Android client for one of the most widely used communication apps in Japan and across Asia. This platform is evolving beyond messaging, integrating AI and diverse services to become an essential life platform for daily living.<br /><br />What You'll Do<br /><br />-Collaborate with project managers, UI/UX designers, data scientists, and business stakeholders to design, develop, and enhance Android client features.<br />-Drive stability and performance improvements for an app relied upon daily by millions.<br />-Participate in ongoing codebase improvements, refactoring, and performance optimization.<br />-Contribute to the development environment, including CI automation and code review workflows.<br />-Engage with user feedback to deliver meaningful product enhancements.<br />-Work on a large-scale, mature codebase with opportunities to influence architecture and best practices.<br /><br />Who We're Looking For<br /><br />- Strong communicator in English OR Japanese.<br />- Experience developing native Android applications using Kotlin and Java in a team environment (including code reviews).<br />- Ability to propose and drive improvements across planning, development, and testing processes.<br />- Eager to enhance team productivity through codebase, tooling, or knowledge sharing.<br />- UI/UX design and development experience.</p><p>Salary<br />- 8 million yen - 12 million yen</p><p><br />Location<br />- Tokyo</p><p>Reference number:06940-0013256389</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/V2F0dW55dS5TaXJpcGFpcm9qLjcyODc2LjEwODk4QHJoaWpwLmFwbGl0cmFrLmNvbQ.gif">
<ul><li>Selling Points</li></ul><p>Why This Role Is Perfect for You<br /><br /><100% Remote-But Japan-Based><br />Enjoy the freedom of full remote work, but with the support and camaraderie of a local team. Applicants must already reside in Japan and possess a valid working visa.<br /><br /><Strong Local Presence><br />You'll join a collaborative group of Japan-based data experts and commercial professionals. While you'll be the first software engineer in Japan, you'll never be alone-our local and global teams work hand-in-hand to deliver results.<br /><br /><Work on Exciting, Real-World AI Projects><br />Be hands-on with a cutting-edge, AI-powered SaaS platform that's already making a difference for major insurance companies. Your work will directly impact the lives of millions of policyholders, helping them get faster and fairer claim resolutions.<br /><br /><Global Collaboration><br />Work closely with a talented, international engineering team (mainly UK-based) and our Japan-based data and commercial experts. You'll bridge Japan and the global team, influencing product direction and customer success.<br /><br /><Modern Tech Stack><br />Build and scale with the latest tools:<br />-Python for application development<br />-Terraform for AWS infrastructure provisioning<br />-Kubernetes (with Helm and Flux) for managing services<br />-GitLab for CI/CD and version control<br />-AWS as our infrastructure platform<br />-PostgreSQL for application data and event sourcing architecture<br />-Apache Flink for real-time service interactions and state management<br /><br /></p><ul><li>Company Profile</li></ul><p>Our client is a pioneering AI-driven platform transforming the insurance industry by automating claims processing with unmatched speed and accuracy. Utilizing advanced technologies like NLP and Optical Character Recognition, they enable insurers to settle the majority of claims in real time, dramatically improving efficiency and customer satisfaction.</p><p> </p><ul><li>The Role</li></ul><p><What You'll Do><br /><br />Build, enhance, and support internal tools and customer-facing features for a complex, AI-powered SaaS platform<br />Collaborate with local and global teams to deliver solutions tailored to Japanese enterprise clients<br />Lead product improvements based on direct customer feedback<br />Own the software lifecycle - from design to deployment and beyond<br /><br /></p><ul><li>Your Skills</li></ul><p><What You Bring><br /><br />Experience building backend systems for SaaS products (Python preferred)<br />Hands-on with cloud environments (AWS or similar)<br />Strong REST API and RDBMS (PostgreSQL) skills<br />Fluent Japanese and business-level English<br />Already living in Japan with a valid working visa (applications from outside Japan cannot be considered)<br />Self-starter who thrives in an independent, remote-first role<br /> </p><p>Salary</p><ul><li>8,000,000 yen - 13,000,000 yen</li></ul><p>Location</p><ul><li>Tokyo</li></ul><p>Reference number : 06940-0013206453</p><p> </p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/S2hhbmcuTGUuMzQxNzkuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
<p>Selling Points</p><p> - International team atmosphere<br />- Attractive AI products widely used by clients in Japan<br />- Abundant learning opportunities<br />- We communicate in English at work</p><p> </p><p>Company Profile</p><p>We are an AI driven product company that provides accounting efficiency solutions. We went to public in September 2023 and now have more than 100 employees. Our product has been used widely by major clients like KDDI, Kao, Suntory, and NTT Data etc.</p><p>The Role</p><p>- New function development for key product in collaboration with PdM and front-end engineers, etc.</p><div class="--b--588 "><div class="-Ch-622 " data-automation-id="questionContent"><div class="-Nt-624 --ue-625"><div class="--lr-658"><div class="-Iz-689"> - API development<br /> - Application design for table design and function development<br /> - Bug fixing in collaboration with QA, etc.<br /><br />Development languages: Node.js(TypeScript) / Golang<br /><br />In order to continuously improve system development to enhance experience, quality, and development efficiency, and to improve the development capabilities of the entire team, we never fail to provide technical input and encourage participation in and sponsorship of study groups.</div><div class="-Iz-689"> </div></div></div></div></div><div class="--b--588 "> </div><div class="--b--588 "> </div><div class="--b--588 ">Your Skills</div><p> Must:<br />・API development experience using Node.js(TypeScript) or Golang<br />・Experience in API interface design<br />・Experience in development using Git<br />・Experience in table design and back-end development using RDB<br />・Minimum communication skills in English for meetings, etc.<br /><br />Preferred:<br />・Experience in development using API mock/stub<br />・Experience in CI/CD development<br />・Experience in DB performance tuning<br />・Experience in building infrastructure with Kubernates / AWS<br />・Experience developing accounting related systems<br />・Experience in system integration with ERP<br />・Experience in developing systems related to accounting<br />・Experience in developing systems linked to ERP<br />・Able to actively contribute his/her experience to the team.<br /><br />We would love if you are/have...<br />・Applicant have a passion for development<br />・Mindset to actively contribute Applicant's experience to the team.<br />・Mindset to adopt new technologies<br />・Those who value working in a team-oriented environment.<br />・Those who can feel the value of accomplishing a big task.</p><p> </p><p>Salary</p><ul><li>7,000,000 yen - 12,000,000 yen</li></ul><p>Location</p><ul><li>Tokyo</li></ul><p>Reference number :06940-0013221296</p><p> </p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/TmFuY3kuWXVhbi45ODQ2My4xMDg5OEByaGlqcC5hcGxpdHJhay5jb20.gif">
<p>Selling Points</p><ul><li> <What's In It For You?><br /><br />Work from Anywhere in Japan: Embrace a truly remote-first culture-engineers typically visit the Tokyo office just once a month (if at all). Enjoy the freedom to design your work-life balance, whether you're in Tokyo or elsewhere in Japan. Must be in Japan.<br /><br />No Japanese Required: English is the language of collaboration. You'll work in a diverse, international team where your skills-not your language ability-open the door to exciting projects.<br /><br />Impact at Scale: Your code will help drive payment infrastructure for some of the world's most recognized online brands. You'll be building systems that support thousands of merchants as they expand into new markets-proof that this company is both stable and scaling fast.<br /><br />Career Growth in a Thriving Environment: The company is planning to triple in size over the next few years, offering you the chance to grow with the business and take on new challenges as they emerge.<br /><br />Startup Agility, Established Foundation: Experience the best of both worlds-move fast, take ownership, and innovate in a company that has already proven its business model and product-market fit.<br /><br />Learning & Development: Receive up financial support for books, courses and conferences. Take advantage of language lessons and regular internal tech events to keep your skills sharp.<br /><br />Generous Time Off: Over 20 days of paid leave per year, including seasonal and birthday holidays, so you can recharge and pursue your passions outside of work.<br /><br />Inclusive, Flat Culture: Engineers play a key role in both product and technical decisions. You'll have a real voice and the autonomy to shape your own growth path.</li></ul><p> </p><p>Company Profile</p><ul><li>Join a globally recognized tech innovator in Tokyo that's redefining digital payments for the world's most dynamic brands.<br />This is your chance to be part of a company that, while still in a high-growth phase, is already powering payment solutions for major international platforms and e-commerce leaders.<br />Enjoy the stability of an established product company-without the bureaucracy of a large enterprise.</li></ul><p> </p><p>The Role</p><ul><li> <What You'll Do><br />Collaborate with a talented team to design, build, and scale robust payment systems and new product features<br />Work with modern OOP languages and frameworks (Ruby, Rails, Vue.js, React, or similar)<br />Drive best practices in code quality, testing, and security<br />Contribute to a culture of continuous improvement and knowledge sharing</li></ul><p> </p><p>Your Skills</p><ul><li> <What We're Looking For><br /><br />3+ years of experience building and scaling web applications or APIs<br />Strong foundation in object-oriented programming and design patterns<br />Experience with secure, reliable integrations and scalable architecture<br />Startup or product company background is a plus<br />English fluency required; Japanese is optional<br /><br /><br /><Bonus Points For><br /><br />Ruby on Rails, Vue.js, React, or TypeScript experience<br />Payments or fintech background<br />Business-level Japanese</li></ul><p> </p><p>Salary</p><ul><li>6,000,000 yen - 9,000,000 yen</li></ul><p>Location</p><ul><li>Tokyo</li></ul><p>Reference number : 06940-0013208237</p><p> </p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/S2hhbmcuTGUuNzY4NjIuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
<p>Selling Points</p><ul><li>Massive Scale and Complexity<br />You'll work on the backend of one of the most widely used platforms, processing tens of billions of traffics daily. Few companies operate at this scale, offering rare hands-on experience with high-throughput, low-latency systems.</li><li>Real-World Impact<br />The platform is more than a chat app-it's a critical infrastructure for daily communication, business services, and government interactions. Your work will directly affect millions of users and thousands of organizations.</li><li>Cutting-Edge Engineering Challenges<br />You'll tackle high-performance backend design, distributed systems, traffic optimization, and platform reliability-ideal for engineers who enjoy deep technical challenges and meaningful problem-solving.</li></ul><p>Company Profile</p><ul><li>A leading Japan-based technology company that focuses in online media, e-commerce, and fintech. The organization operates a widely used communication platform with integrated services such as digital payments and lifestyle tools, alongside a prominent web portal offering search, news, and advertising solutions. With strong backing from a global telecommunications and investment group, the company is focused on building an all-in-one digital ecosystem that supports millions of users in their daily online activities across communication, information access, and transactions.</li></ul><p>The Role</p><ul><li>Responsible for backend development of a large-scale communication platform that processes tens of billions of messages daily.</li><li>The role involves building and enhancing core infrastructure to ensure high performance, scalability, and reliability under massive traffic volumes.</li><li>Work includes supporting both user-facing messaging services and backend systems used by businesses and external partners integrated into the platform.</li><li>Focus is on continuous optimization of system resources, maintaining operational stability, and delivering backend solutions that provide greater value to internal teams and end users alike.</li></ul><p>Your Skills</p><ul><li>Required Experience/Skills</li><li>Server-side development experience (JVM language or C/C++) (3 years or more)</li><li>Experience in operating production systems in a Linux/Unix environment</li><li>Experience in database operations (MySQL, Redis, HBase, Cassandra, Elasticsearch, etc.)</li></ul><p><br />Desirable experience/skills</p><ul><li>Experience in designing and developing server applications and databases in high traffic environments</li><li>Knowledge of JVM tuning and monitoring</li><li>Major in computer science or related field at university or graduate school</li><li>Business level English (reading and writing)</li></ul><p>Salary</p><ul><li>13,000,000 yen - 18,000,000 yen</li></ul><p>Location</p><ul><li>Tokyo</li></ul><p>Reference number : 06940-0013209961</p><p> </p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/VmljdG9yaWFSeW8uNzkwMDQuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
<p>Selling Points</p><ul><li>Flexible full-time work with no core hours</li><li>Remote-friendly policies and tech-forward culture</li><li>Competitive compensation, annual performance bonuses, and potential equity</li><li>Paid time off, wellness support, and skill-building allowances</li><li>The chance to shape software quality in industries that truly matter-finance and energy</li></ul><p>Company Profile</p><ul><li>We're looking for a Senior SDET to lead test automation and drive software quality across large-scale platforms in the Fintech and Energy Tech industries. You'll work on services that support millions of users or power national infrastructure, from next-generation credit platforms to energy trading marketplaces.</li><li>This is a hands-on technical leadership role where you'll build robust automation systems and directly influence engineering practices and release velocity.</li></ul><p>The Role</p><ul><li>Design and build automation frameworks for APIs, microservices, and batch job workflows</li><li>Lead automated testing across web, backend, and infrastructure layers</li><li>Drive CI/CD integration of test suites using GitLab CI, Jenkins, and Gradle</li><li>Write test cases using Java frameworks (TestNG, JUnit, AssertJ)</li><li>Generate detailed test reports using Allure; use SLF4J and logging tools for debugging</li><li>Contribute to risk validation systems, secure data pipelines, and performance assurance</li><li>Foster QA culture and introduce risk-based testing, quality metrics, and tooling improvements</li></ul><p>Your Skills</p><ul><li>5+ years of experience in QA automation or software testing</li><li>Strong coding skills in Java, and knowledge of test frameworks like JUnit, TestNG</li><li>Experience testing APIs, backend systems, or microservices (REST/gRPC)</li><li>Familiar with mocking libraries (e.g. Mockito) and API testing tools (REST Assured, Postman)</li><li>Experience integrating automation into CI/CD pipelines</li><li>Excellent communicator who collaborates well with developers and product teams</li></ul><p>Salary</p><ul><li>10,000,000 yen - 12,000,000 yen</li></ul><p>Location</p><ul><li>Tokyo</li></ul><p>Reference number : 06940-0013242907</p><p><em>By clicking 'apply', you give your express consent that Robert Half may use your personal information to process your job application and to contact you from time to time for future employment opportunities. For further information on how Robert Half processes your personal information and how to access and correct your information, please read the Robert Half privacy notice <a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>. Please do not submit any sensitive personal data to us in your resume (such as such as race, beliefs, social status, medical history or criminal record) as we do not collect your sensitive personal data at this time.</em></p><hr /><p>お客様が「今すぐ応募」ボタンをクリックすることにより、ロバート・ハーフ（以下、当社）がお客様の応募内容を処理し、求人情報を今後随時ご連絡する目的で個人情報を使用することに明示的に同意ただいたこととなります。当社による個人情報の処理方法、またお客様自身の個人情報へのアクセスおよびその訂正に関する詳細については、プライバシー規約（<a href="https://www.roberthalf.com/jp/ja/privacy">https://www.roberthalf.com/jp/ja/privacy</a>）をお読みください。当社は、要配慮個人情報はお預かりしておりませんので人種、信条、社会的身分、病歴、犯罪の経歴など、取扱いに特に配慮を要する個人情報は、ご提出いただく職務経歴書・レジュメ等に含めないようお願いいたします。</p><img src="https://counter.adcourier.com/c3VlLnRpbmcuNjMyNjguMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
