We’re looking for a senior or upper-intermediate backend/full-stack developer to join a modular B2B fintech platform project. The platform connects businesses to third-party APIs (e.g., card issuing, payment processing) via a unified KYC and access flow.
You’ll start remotely, with the opportunity to relocate to Japan if there’s mutual interest. Visa sponsorship is available.
? Required Skills:

5+ years of experience in backend or full-stack development.

Expert in Node.js, or another modern backend stack (e.g., Python/Django, Go, etc.).

Deep understanding of REST API design, modular architecture, and microservices.

Strong experience with API authentication (OAuth2, JWT, API keys).

Familiarity with CDN-distributed JavaScript modules or SDKs (e.g., loading JS modules via script tags, version control, cache strategies).

Skilled in secure handling of credentials, tokens, and sensitive data.

Comfortable building and maintaining production-grade infrastructure.

Strong communication skills and self-management in a remote work environment.

?? Bonus Skills (Nice to Have):

Experience with Vue.js, React, or other modern frontend frameworks.

Familiarity with developer-focused platforms, SDKs, or sandbox APIs.

Experience in fintech, SaaS, or developer tools.

Contribution to open-source or interest in working on partially open-source projects.

? Ideal For:

A highly skilled developer who wants to play a central role in building a next-gen API platform.

Someone looking for remote-first flexibility, but open to relocating to Japan for a long-term opportunity.

Engineers passionate about developer experience, API ecosystems, and modular, maintainable code.

Контактна інформація →