Gen Ai Engineer Jobs in Tokyo, Tōkyō

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Software Engineer

Tokyo,
remote
Contract
16.9M - 16.9M JPY / Yearly
Company ProfileA venture-backed AI technology company focused on developing verifiable and explainable AI solutions for scientific and engineering applications. The company combines advanced machine learning, formal reasoning, and domain expertise to accelerate innovation in complex technical fields, including engineering design, semiconductors, and scientific research. The Role<ul><li>Develop and maintain backend applications using Python/FastAPI and frontend applications using React/Next.js</li><li>Design APIs and databases, and optimize SQL performance</li><li>Contribute to system architecture and technical decision-making</li><li>Build scalable, secure, and reliable systems</li><li>Develop and enhance AI-powered features and agent workflows</li><li>Integrate and utilize LLM technologies and AI platforms</li><li>Perform unit, integration, and end-to-end testing</li><li>Participate in code reviews and quality improvement initiatives</li><li>Collaborate closely with Tech Leads and AI Engineers</li><li>Support cross-functional development teams and knowledge sharing</li></ul> Your Skills <ul><li>Cloud platforms and infrastructure</li><li>AI/LLM integration (OpenAI, Anthropic, Vertex AI, etc.)</li><li>Testing (Unit, Integration, E2E)</li><li>System design and scalable architecture</li><li>CI/CD and software engineering best practices</li><li>Troubleshooting and production support</li></ul> Key Highlights of the Role <ul><li>Work on next-generation AI products for science and engineering.</li><li>Build both full-stack applications and AI-powered features.</li><li>Influence system architecture and technical strategy.</li></ul> Salary8,125 JPY　〜 hourly Reference Number: 06940-0013502812 By clicking 'apply', you are deemed to have agreed to Robert Half Japan Privacy Notice (<a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>). Please ensure that your application documents do not include sensitive personal data such as race, beliefs, medical history, criminal record, or other information irrelevant to hiring process such as spouse or dependents. All information must be accurate and truthful, and any included hyperlinks must be safe and secure.<img src="https://counter.adcourier.com/bWljaGFlbC5oYWdlZG9ybi45MjQ2Ni4xMDg5OEByaGlqcC5hcGxpdHJhay5jb20.gif">
2026-10-02T03:30:41Z

Senior Software Engineer

Tokyo,
remote
Permanent
15.0M - 15.0M JPY / Yearly
Company ProfileA leading global financial services organization providing investment banking, securities, asset management, and financial technology solutions to institutional and corporate clients worldwide. The company leverages advanced technology platforms, cloud infrastructure, and data-driven innovation to support mission-critical financial services across global markets. The Role<ul><li>Design, develop, and maintain large-scale, high-performance software platforms and services.</li><li>Build cloud-native applications, APIs, and distributed systems supporting critical business operations.</li><li>Collaborate with global engineering, business, and operations teams to deliver scalable technology solutions.</li><li>Drive system modernization initiatives, including cloud migration and platform transformation.</li><li>Contribute to architecture decisions, performance optimization, and production reliability.</li><li>Mentor engineers and promote engineering best practices across the organization.</li></ul> Your Skills <ul><li>Strong software development experience in Java, Python, C++, or related technologies</li><li>Experience with cloud platforms, microservices, and distributed systems architecture</li><li>REST API development and database design experience</li><li>Knowledge of CI/CD, DevOps, system monitoring, and automation</li><li>Strong problem-solving and troubleshooting skills</li><li>Business-level communication skills in English</li></ul> Key Highlights of the Role <ul><li>Join a world-class engineering organization within the financial services industry.</li><li>Work on highly scalable platforms supporting global business operations.</li><li>Collaborate with international teams and cutting-edge technology environments.</li><li>Influence architecture, technical strategy, and next-generation platform development.</li><li>Gain exposure to cloud, distributed systems, and AI-enabled engineering practices.</li></ul> Location Tokyo Salary15 million yen Reference Number: 06940-0013501947 <img src="https://counter.adcourier.com/c3VlLnRpbmcuNzc3OTUuMTA4OThAcmhpanAuYXBsaXRyYWsuY29t.gif">
2026-10-02T04:50:06Z

Head of Development

Tokyo,
remote
Permanent
20.0M - 30.0M JPY / Yearly
Company Profile Construction AI company building an AI-native quantity-takeoff system, adopted by major general contractors and building materials manufacturers, is looking for a staff engineer to lead its full-stack AI platform. The Role <ul><li>You will coordinate the AI, frontend and backend teams to deploy multi-model AI pipelines (vision-language, OCR, segmentation, object detection) into production.</li><li>You will deliver interactive web canvases (2D/2.5D) that let industry experts inspect and edit AI results in real time.</li><li>You will drive domain architecture for a multi-tenant enterprise data model (MDM, CPQ, quantity takeoff) and optimize model serving to achieve sub-second multi-model execution.</li><li>You will raise the engineering bar across the team (schema migration, evaluation harnesses) and translate client and PM needs into technical roadmaps.</li></ul> Your Skills <ul><li>Fluent or native level Japanese</li><li>You have one or two of the strengths below:</li></ul><ol><li>Hands-on experience deploying AI models to production alongside AI research/engineering teams.</li><li>Track record of designing sophisticated software systems and aligning frontend and backend engineers.</li><li>Experience leading engineering teams and cross-functional units, including working with PMs and external clients.</li><li>Experience with CAD/BIM or spatial data, ERP/CPQ integrations, CUDA/C++, vLLM/llama.cpp, or distributed multi-time-zone teams is a plus.</li></ol> Key Highlights of the Role <ul><li>Work on proprietary in-house AI models that outperform commercial frontier models, not "wrapper" products.</li><li>Join a small, elite team with real ownership and autonomy.</li><li>Be part of a fast-growing company expanding globally</li><li>Shape the future of construction through the world's first product of its kind, originating from Tokyo.</li></ul> Location Tokyo Salary20 - 30 million yen Reference Number: 06940-0013517591 By clicking 'apply', you are deemed to have agreed to Robert Half Japan Privacy Notice (<a href="https://www.roberthalf.com/jp/en/privacy">https://www.roberthalf.com/jp/en/privacy</a>). Please ensure that your application documents do not include sensitive personal data such as race, beliefs, medical history, criminal record, or other information irrelevant to hiring process such as spouse or dependents. All information must be accurate and truthful, and any included hyperlinks must be safe and secure.<img src="https://counter.adcourier.com/TmFuY3kuWXVhbi4xMzQ1NS4xMDg5OEByaGlqcC5hcGxpdHJhay5jb20.gif">
2026-10-01T06:06:31Z

3 results for Gen Ai Engineer in Tokyo, Tōkyō