Optimized activity data retrieval
~10s→<1s
Batched reads and cache-aware retrieval reduced unnecessary database and network operations.
Full Control
A health and activity challenge platform for organizations.
React Native · Kotlin · Node.js · Koa · MySQL · Redis · Google Health API
Engineering Highlights
Migrated health-data integration
Fitbit API→Google Health API
Worked across OAuth, native Android integration, and backend synchronization.
Hardened the platform for compliance
Modernized legacy code paths and resolved security vulnerabilities to bring the app in line with HIPAA requirements.
What I Built
Mobile
React Native · Kotlin
Built mobile features and native Android integrations.
Backend
Node.js · Koa · MySQL
Developed APIs and challenge-processing logic.
Integrations
OAuth · Google Health API · OneSignal
Implemented health-data sync, push notifications, and QR-based deep linking.
Performance
Redis · Batch Processing
Reduced unnecessary requests with caching and batch processing.
What I Learned
- Designing synchronization flows around external health APIs
- Handling inconsistent data across systems
- Bridging React Native with native Android functionality
- Operating under HIPAA compliance constraints