Senior Full-Stack Engineer (Node/TypeScript + React Native)

We're hiring an autonomous Senior Full-Stack Engineer to own web and mobile development end to end — backend architecture through polished UIs. You'll build scalable Node.js/TypeScript services (Express, NestJS), high-performance React and React Native frontends, manage iOS/Android release pipelines, and integrate third-party APIs and payment gateways. Requirements: 6+ years commercial experience, a completed Computer Science (or equivalent) degree, SQL/NoSQL design, microservices, production-proven React Native, and exceptional written and spoken English. You must have held a role at an established engineering organization — not freelance work only. You must currently reside in North or South America with full overlap to Los Angeles (Pacific) hours. Hourly contract, 40–80 hrs/month, occasional full-time capacity. Nice-to-have: fintech/PCI, Web3, Bun/Biome/Hono. Recent grads and bootcamp-only portfolios won't be considered.