Save Job Back to Search Job Description Summary Similar JobsBuild a FinTech product used by over 70 million users.Rare opportunity to redesign large-scale financial system.About Our ClientThe company was established in 2021 to deliver more accessible and convenient financial services integrated with the payment platform.Job DescriptionDesigning, developing, and delivering complex large-scale systems.Collaborating with product managers, frontend engineers, and other stakeholders to implement new features.Designing scalable solutions for high-traffic services.Developing platform components such as RESTful APIs, Pub/Sub systems, and database clients.Participating in code reviews and knowledge sharing to maintain engineering best practices.Troubleshooting production issues, debugging systems, and identifying root causes.The Successful ApplicantExperience with an OOP language such as C# or JVM-based languages (e.g., Java, Scala).Experience with RDBMS, NoSQL databases, and distributed caching technologies.Strong fundamentals in data structures, algorithms, and object-oriented programming.Solid understanding of concurrency and distributed computing.Experience implementing platform components such as RESTful APIs and Pub/Sub systems.Experience with microservices and event-driven architectures.Experience designing high-traffic systems.What's on OfferHybrid work environment (remote + office)Full flex-time system with no core hoursNo fixed office attendance rules within the technology organizationWeekends and Japanese national holidaysNew Year holidaysAnnual paid leave (up to 14 days in the first year, prorated based on joining month)Personal leave (5 days annually)Full social insurance coverage401(k) retirement planContactTakumi NozakiQuote job refJN-012026-6935141Phone number+813 6627 6070Job summaryFunctionITSpecialisationProgramming / DevelopmentSpecialisationTechnology & TelecomsLocationChiyodaJob TypePermanentConsultant nameTakumi NozakiConsultant phone+813 6627 6070Job ReferenceJN-012026-6935141Company TypeJapanese CorporateWork from HomeWork from Home or Hybrid