Full-stack Engineer (Senior)
¥7.5M–11M
Build platform features end-to-end (author / reader / ops side), write tests and take part in code reviews.
Must-have: solid TypeScript/React/Next.js/Prisma, REST/Server Actions, self-driven delivery.
We are building products and keeping them running, and we need more people to do it with. Come take this on with us.
Half of the people here are people. The other half is AI. We are looking for the kind of human who can get the most out of that.
Someone who decides. Who builds. Who won’t let a rough edge through. Someone whose work would impress the AI sitting next to them. Is that you?
(Salary figures are for reference; actual compensation is determined individually based on experience, skills and other factors.)
¥7.5M–11M
Build platform features end-to-end (author / reader / ops side), write tests and take part in code reviews.
Must-have: solid TypeScript/React/Next.js/Prisma, REST/Server Actions, self-driven delivery.
¥8M–12M
Build subscription billing, royalty payouts, refunds, multi-currency, Japanese consumption tax (qualified invoices), reconciliation and audit — with rigorous correctness and idempotency.
Must-have: deep Stripe (or similar) experience, financial-grade correctness mindset (idempotency / reconciliation / audit), strong TypeScript.
¥5.5M–9M
Day-to-day accounting and closing, royalty payouts and reconciliation, multi-currency, consumption-tax / qualified-invoice work, and collaboration with tax accountants and the payments engineer — a key human-judgment role.
Must-have: bookkeeping (Nissho 2nd grade) or equivalent, Japanese corporate accounting / closing experience, diligence and compliance awareness.
¥6.5M–10M
Own the ops-console processes, content policy and trust & safety (reports / appeals / anti-abuse / age compliance), and define SLAs and escalation.
Must-have: trust & safety / content ops / platform-governance experience, calm judgment, JP/EN (CN a plus).
¥7M–11M
Own the product roadmap and priorities, requirements and acceptance, coordinate engineering / design / ops / finance, and set the launch-and-iterate rhythm.
Must-have: consumer / platform product experience, data-driven, excellent written communication.
¥3.8M–5.5M
Support users and authors (JP/CN/EN), handle tickets and the knowledge base, and feed common issues back to product and engineering.
Must-have: at least two working languages (Japanese preferred), empathy and structure, basic technical literacy.
¥7M–12M
Maintain terms / privacy / legal documents and compliance (GDPR / APPI etc.), contract review, copyright and content legal matters, and liaise with outside counsel and tax accountants. Can start part-time / on contract.
Must-have: tech / platform legal experience, familiarity with data and consumer protection, JP/EN.
If a role catches your eye, just email us.
info@mkage.com Back to home