<p><strong>Company Profile</strong></p><p>A leading Japanese technology group that addresses social inconveniences by expanding major online advertising, booking platforms, and B2B SaaS business tools globally.</p><p><strong> </strong></p><p><strong>The Role</strong><br /> As a Backend Engineer, you will lead the development and launch of a brand-new, AI-driven smart booking/matching platform tailored specifically for overseas markets, starting with the US (※no release planned in Japan).</p><ul><li>Current Phase: The product is currently in the PoC stage, focusing on validating an innovative AI matching concept.</li><li>Core Mandate: Act as a core member of a small-scale, cross-functional Scrum team, focusing heavily on hands-on backend engineering.</li><li>Key Assignments:</li><ul><li>API Development: Focus heavily on designing and implementing backend APIs that integrate smoothly with mobile applications.</li><li>Tech Stack: Python, SQL, Database (RDB/MySQL), AWS (Lambda, API Gateway, RDS, Glue), Google Cloud (BigQuery).</li></ul></ul><p> </p><p><strong>Your Skills </strong></p><p>■Required Qualifications (MUST)</p><ul><li>Experience: 5+ years of professional backend software development experience.</li><li>Seniority: Middle to Senior level (Focus is on hands-on development; high-potential talent without prior management experience are welcome).</li><li>Technical Foundation: Good understanding of databases (SQL/RDB) and familiar with basic cloud infrastructure concepts (AWS) necessary for backend integration.</li><li>Languages: Business-level proficiency in both Japanese and English (reading, writing, and speaking).</li></ul><p><br /> ■Preferred Qualifications (WANT)</p><ul><li>Experience with AI product development, RESTful API design (Go/Python/Java), serverless architectures, or scrum methodologies.</li><li>Experience working within cross-functional, global, or multi-national engineering teams.</li><li>Mobility: Willingness and ability to take business trips to the US.</li></ul><p> </p><p><strong>Key Highlights of the Role </strong></p><ul><li>0-to-1 Global Challenge: Rare opportunity to build a global product from scratch for the US market within a well-funded, major Japanese firm.</li><li>End-to-End Ownership: Engage in lean, fast-paced "All in UX" development. Engineers are actively involved in upstream product design and market research, rather than just coding.</li><li>Top-Tier Compensation: Highly competitive annual salary ranging from ¥10M to ¥15M based on experience.</li><li>Ultimate Work Flexibility: Coreless Super Flex system with an annual holiday allowance of 140 days and a full remote work option.</li></ul><p> </p><p><strong>Location </strong></p><p>Tokyo</p><p><strong> </strong></p><p><strong>Salary</strong></p><p>10 - 15 million yen</p><p><strong> </strong></p><p> </p><p>Reference Number: 06940-0013450798</p><p> </p><p> </p><p><em>By clicking 'apply', you are deemed to have agreed to Robert Half Japan Privacy Notice (</em><a href="https://www.roberthalf.com/jp/en/privacy"><em>https://www.roberthalf.com/jp/en/privacy</em></a><em>). 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.</em></p><img src="https://counter.adcourier.com/WGlhb2NoZW4uU3VuLjk4MzU3LjEwODk4QHJoaWpwLmFwbGl0cmFrLmNvbQ.gif">