Senior React Native / Flutter Engineer

We're building a consumer Fintech Mobile App for the African market: multi-currency wallets (crypto + local fiat + USD), buy/sell/convert crypto, send/receive, savings and yield, crypto-backed loans, bill pay, gift cards, and invoicing. A high-fidelity design prototype already exists. We need a senior mobile engineer to turn it into a production iOS/Android app (React Native or Flutter) integrated with our backend APIs. You'll own onboarding and KYC capture, wallet and on/off-ramp flows, swap, biometric/PIN auth, push notifications, and a mobile backend-for-frontend. Strong plus: prior crypto/wallet/fintech or regulated payments experience, secure key handling, and money-movement UX. This is a long-term, high-ownership role with room to lead a small mobile team.