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CAREER

Careers

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?

Open positions

(Salary figures are for reference; actual compensation is determined individually based on experience, skills and other factors.)

Engineering Full-time

Lead Engineer (CTO candidate)

¥10M–15M

Own the technical roadmap and architecture, lead the engineering team, and take responsibility for launch stability, security and performance.

Must-have: 8+ yrs web engineering, 3+ yrs leading; TypeScript/React/Next.js/Node, PostgreSQL/Prisma.

Engineering Full-time

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.

Engineering Full-time

Payments & Billing Engineer

¥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.

Finance & Legal Full-time

Finance & Accounting

¥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.

Operations & Trust Full-time

Ops & Trust & Safety Lead

¥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).

Product & Design Full-time

Product Manager

¥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.

Support Full-time / Contract

Customer Support (Multilingual)

¥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.

Finance & Legal Full-time / Contract

Legal & Compliance

¥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.

Work style & benefits

  • Hybrid work (Osaka HQ + remote)
  • Visa sponsorship for overseas candidates
  • Full social insurance and statutory benefits
  • 3–6 month probation period

If a role catches your eye, just email us.

info@mkage.com Back to home