Fullstack Engineer | React Native + Backend (Middle+)

Format: Remote 5/2 + possible flexible Saturday | 11:00-20:00 (UTC+3) - by agreement Salary: from $4,000 net - by agreement Company - Kelpie

We are looking for a developer for a B2C fintech product in personal finance management (early-stage product). The main focus of the role is mobile + backend: React Native app for iOS/Android, backend/API, subscriptions, analytics, and integrations. We need an independent engineer with commercial experience.

⚡️Main tasks: • develop the mobile app on React Native / TypeScript • work with the backend on Node.js / NestJS or a similar stack • implement subscriptions: Stripe / IAP / RevenueCat / Adapty, trial, renewal, cancellation • independently release and update applications in the App Store / Google Play • develop the product funnel: onboarding - paywall / checkout - purchase • connect analytics, A/B tests, and work with funnel events • integrate external APIs / Open Banking • work with banking and other sensitive user data • develop an AI pipeline for processing financial data • actively use Claude Code / Cursor / Codex / AI-agents

⚡️What is important: • commercial experience with RN + TS • confident development for iOS / Android • experience with releases in the App Store / Google Play • solid backend: Node.js / NestJS, API, PostgreSQL • experience with subscription products and payments • understanding of product funnels and event analytics • basic understanding of security: auth, access control, server-side validation • experience with Docker / CI/CD / cloud • high level of independence and comfort in an early-stage / startup environment Will be a plus: fintech / banking data / Open Banking / Plaid/CDR, Swift/Kotlin, Redis, AWS, Amplitude/AppsFlyer.

📲Contact: recruiter contact