Mobile apps

Built React Native (Expo) cross-platform apps with native modules where needed — published to App Store and Play Store under client accounts.

Backends in Node.js / .NET exposing REST and GraphQL endpoints, with Firebase Auth + Cloud Messaging for push, RevenueCat for in-app subscriptions and over-the-air updates via Expo OTA.

Apps shipped: a fitness coaching tracker, a betting tipster feed and a niche social app — combined ~10k installs.