AION TempShield — Lead Mobile Engineer, Dec 2025 – Present
Companion app for an FDA-cleared wearable temperature sensor, worn continuously for up to 60 days by oncology patients between chemotherapy visits.
Own the iOS and Android app end to end: BLE pairing with the patch, reading pipeline, threshold alerts, care-team sharing, store releases
Built offline-first sync on WatermelonDB with native BLE and background modules in Kotlin and Swift — readings hold for hours without signal and upload in batches on reconnect
Integrated blood-pressure and SpO2 monitors and a Moko BLE gateway for home setups
tianDe — React Native Developer, Sep 2019 – May 2021
Health and beauty e-commerce app for iOS and Android, 100K+ installs.
Led the full rewrite of a 100K-install legacy codebase to modern React Native with TypeScript, functional components and React Hooks
Shipped offline mode on AsyncStorage and SQLite, push notifications, in-app purchases through StoreKit and Google Play Billing, and geolocation services
Optimised performance with FastImage caching, list virtualisation, memory leak fixes and Hermes adoption
React Native (New Architecture: Fabric, TurboModules, JSI, Hermes) · Expo, EAS · native modules in Swift and Kotlin · BLE · biometrics · background execution · MMKV, WatermelonDB