React Native Developer (Expo / Supabase)
Madfish
Software Engineering
Ukraine · Europe · Europe · Europe · Ukraine
Posted on Oct 10, 2025
🚀 About Kilona.io
At Kilona.io, we build fast, reliable, and scalable AI-powered web and mobile applications. Our team partners with top global startups to deliver modern products that combine strong engineering with beautiful design.
We’re now expanding our team to strengthen our mobile AI product built on React Native Expo and Supabase — a modern, cloud-first stack for rapid development.
💼 What You’ll Do
- Develop and maintain React Native Expo mobile applications
- Integrate and manage Supabase or Firebase for authentication, real-time data, and storage
- Optimize app performance and implement clean, scalable architecture
- Work closely with a small, fast-moving, and highly technical remote team
✅ Requirements
- 2+ years of commercial experience with React Native (Expo preferably)
- Strong knowledge of JavaScript / TypeScript, React hooks, and modern ES6+ features
- Hands-on experience with Supabase or Firebase (auth, database, storage, functions)
- Familiarity with Node.js / Express.js for API integrations
- Confident using Git, React Navigation, and modern dev tools
- Experience integrating REST APIs and handling real-time updates
- Upper-intermediate level of English (B2+) for async and live communication
✨ Nice to Have
- Experience publishing apps to App Store and Google Play
- Understanding of CI/CD pipelines (EAS, GitHub Actions, or similar)
- Familiarity with AI-assisted development tools (ChatGPT, Cursor, Lovable, V0, etc.)
🧑💻 Working Conditions
- Hourly-based model — overtime always paid
- Fully remote — work from anywhere
- Flexible schedule — async-friendly with minimal meetings
- No bureaucracy — take time off when you need it
- Build cutting-edge AI products alongside a global, high-performance team
🔍 Hiring Process
- Video intro or quick screening call (20–30 mins)
- Technical interview (up to 1 hour)
- Final interview (optional)
- Offer 🎉