Bjak
Backend Software Engineer- Finance Super App (Japan)
Remote Entry Level Fintech Backend Developer role with clear candidate location fit.
PostedJul 6, 2026
Eligible countries1 accepted country
Seniority signalJunior
Work settingRemote
Accepted candidate locations
Japan
Role overview
Backend Software Engineer- Finance Super App (Japan)
Requirements and responsibilities
Readable role content extracted into sections for faster review.
What You'll Own
- Build backend services, APIs and workflows for the finance super app.
- Support products across insurance, payments, wallet, savings, investing, travel and financial services.
- Design reliable systems for user accounts, transactions, partner integrations, reconciliation, notifications and operations.
- Work with product and mobile teams to ship customer-facing journeys quickly.
- Integrate with banks, payment gateways, insurers, data providers and other partners.
- Improve system reliability, observability, security and performance.
- Build systems that are practical, auditable and ready for regulated financial products.
What We're Looking For
- 3+ years of backend engineering experience.
- Strong fundamentals in APIs, databases, system design and production debugging.
- Experience building scalable services and integrating third-party systems.
- Good understanding of security, reliability, data quality and operational edge cases.
- Able to make practical trade-offs between speed, quality and risk.
- Comfortable working with product, mobile, operations and business teams.
- Experience in fintech, payments, insurance, lending, banking or regulated products is a strong advantage.
The Kind of Builder We Want
- Builds systems that work in the real world, not just on diagrams.
- Thinks through edge cases, failure modes and operational impact.
- Can move fast without creating fragile foundations.
- Takes ownership of production issues and long-term reliability.
- Explains clearly what they personally built versus what the team delivered.
This Role Is Not For
- Engineers who only want isolated backend tasks.
- People who ignore security, data consistency, monitoring or operational risk.
- Developers who cannot work with fast-changing product requirements.
- Candidates who talk about scale but have not handled production systems.
- People who exaggerate impact without being clear on ownership.
Similar roles
Keep a backup shortlist.
Stack
Use these tags to compare similar remote roles.
Location eligibility
Candidates should apply only when their profile country is listed here.
Your profileCountry not setSign in to check your country against this role.
Hiring flow
WithMira shows the role, then sends candidates to the company application.
1Check role fit, stack, and location eligibility in WithMira.
2Open the company application page from the tracked apply link.
3Save the role or subscribe for similar opportunities before leaving.