Job Description
Company Profile
- 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.
The Role
- Design, develop, and maintain backend features for a robust payments gateway platform.
- Build scalable, fault-tolerant microservices and contribute to monolithic payment systems.
- Collaborate with product managers, SRE, and commercial teams to deliver high-quality solutions.
- Write automated tests, maintain CI/CD pipelines, and ensure system uptime.
- Proactively identify and implement improvements, including proof-of-concept work.
- Participate in code reviews and help mentor junior engineers.
- Communicate openly with the team via Slack and occasional meetings, contributing to a transparent and collaborative culture.
Your Skills
What You Bring
- Solid foundation in computer science, ideally with a relevant degree or equivalent experience.
- Hands-on experience building robust software using object-oriented principles, typically gained over several years in a professional setting.
- Practical exposure to functional programming concepts-whether through Scala, Kotlin, Java (with modern features), or other functional-first languages.
- Proven ability to design and implement backend systems that interact with APIs.
- Comfortable working with relational databases to manage and query data efficiently.
- Familiar with writing and maintaining automated tests to ensure code reliability.
- Regular user of Git for version control and collaborative code review.
- Business Japanese (N2/N3 level preferred) for reading documentation and occasional stakeholder communication.
- Business-level English for cross-functional collaboration.
- Currently residing in Japan with a valid working visa
- Note: This role requires you to be physically located in Japan. Remote work from overseas is not possible.
- Self-motivated and proactive with the ability to work independently in a remote setting.
- Strong communication skills, comfortable with open team discussions and transparent collaboration.
- Proactive problem solver who enjoys innovation beyond routine API development.
- Comfortable working in a smaller team with close stakeholder interaction.
- Experience with Agile development
- Experience developing systems from scratch
- Experience with messaging/event-driven architectures
- Experience with NoSQL databases
- Familiarity with AWS services and serverless frameworks
- Experience with scalable, highly available systems
- Contributions to open source projects
- Background in financial services
Location
Tokyo
Salary
7 - 10 million yen
Selling points
- 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.
- 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.
- Modern Tech Stack: Work with Scala, Kotlin, Java (functional programming), AWS cloud services, microservices architecture, CI/CD pipelines, and event-driven systems.
- Shape the Platform's Future: Take ownership of your work, influence technical decisions, and proactively propose improvements beyond routine API development.
- 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.
- 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.
- Continuous Learning & Innovation: Participate in tech talks, proof-of-concept projects, and a culture that encourages curiosity and ownership.
Reference Number: 06940-0013217037
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