<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 &amp; 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">