Mykhailo T.

I take React Native apps from an idea or a stalled build to a live release on the App Store and Google Play, and then keep them shipping. Recent work you can verify in the stores (links in my portfolio): • Stirden (iOS, live since January 2026). I started it from zero, designed the app and backend architecture, and was the only engineer. React Native + Expo with a Supabase backend, an AI mentor, subscriptions (Superwall + native in-app purchases), personalized push notifications, and a CI pipeline that shipped 10 releases in the first 4 months. • Emulait (iOS + Android). The app was unreleased when I joined. I reworked the architecture, fixed the open bugs, rebuilt parts of the UI, and it launched on both stores 2 months later. I kept developing it for 2 years against a live user base, improved startup time and bundle size, and built the Bluetooth (BLE) device-control foundation for the company's connected hardware. 5+ years of React Native across consumer, health, fintech and corporate apps, including projects under NDA with biometric login, PIN-locked flows and secure storage. What I can do for you: • Build a new app or MVP end to end (React Native / Expo, Supabase or Firebase) • Take over an existing app: fix bugs and crashes, improve performance, ship the next release • Publish to the App Store and Google Play, and set up CI/CD for repeatable releases • Add features: AI (OpenAI / Claude), subscriptions and in-app purchases, push notifications, Bluetooth devices, biometric login How I work: I use Claude Code and Cursor under my own architecture and review, so your budget goes further without cutting quality. On Stirden about 70% of the code was AI-generated, and I reviewed every change. Weekly demos, written updates, and replies within 4 hours during EU working hours. Send me the brief and I'll come back with scope, a rough timeline and an estimate.