Mobile Fintech Developer (Flutter or React Native + Node.js)

Budget: $8000.00 (Fixed-Price, 4 Milestones) Job Description: We are building Phase 1 of a cross-border payment and digital voucher app. What you will build: Mobile UI (Flutter or React Native) with dynamic QR code generation and camera scanning. Stripe Mobile SDK integration (Auth-and-Capture hold with mandatory 3DS). Node.js + PostgreSQL backend managing transaction states (PENDING → VERIFIED → SETTLED). Payout REST API connection to transfer funds to recipient mobile wallets. Milestones (Escrow Funded): Milestone 1: Database setup + Stripe 3DS pay-in working in sandbox. Milestone 2: Escrow state logic + QR generate/scan flow. Milestone 3: Outbound payout API connected in sandbox. Milestone 4: End-to-end testing, APK/TestFlight builds, and GitHub handover. To Apply: Send 1–2 links to live apps you’ve deployed that handle payments or QR scanning, and confirm your preferred stack.