Fullstack Engineer

** Company Name:** Kelpie Position: Fullstack Engineer | Node.js + React Native (Middle+ - Senior) Work Format: Remote Employment: full-time Schedule: 5/2 + possible flexible Saturday, 11:00–20:00 (UTC+3), by agreement Salary Range: $4,000–$7,000 net / month Contacts: recruiter contact

⚡️Vacancy Description: We are looking for a Fullstack Engineer for an early-stage B2C fintech product in personal finance management. The main focus of the role is Node.js backend + React Native mobile. We need an independent engineer with strong commercial experience who can work with the backend/API, mobile application for iOS/Android, subscriptions, analytics, and external integrations, and bring tasks from idea to production without detailed technical specifications.

⚡️Key Responsibilities: • backend development on Node.js / NestJS or similar Node.js stack • mobile app development on RN / TS • working with PostgreSQL, API, authorization, and external integrations • implementing subscriptions: Stripe / IAP / RevenueCat / Adapty, trial, renewal, cancellation • independent releases and updates in App Store / Google Play • developing the product funnel: onboarding - paywall / checkout - purchase • event-based analytics and A/B testing • integrations with Open Banking / banking APIs • working with sensitive financial data and security • developing an AI pipeline for processing financial data • Claude Code / Cursor / Codex / AI-agents

⚡️What's Important: • commercial experience with Node.js / TypeScript • good backend skills: API, PostgreSQL, architecture, and integrations • commercial experience with RN + TS • experience developing for iOS / Android • personal experience with releases in App Store / Google Play • experience with subscription products and payments • understanding of product funnels and event-based analytics • understanding of basic security principles: 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