I build mobile apps that survive real conditions such as offline networks, Bluetooth hardware, live payments.
At Zapygo Energy, I built and delivered a fuel delivery platform for drivers in remote sites.
What I build:

React Native apps (Expo and bare workflow, EAS builds, production deployments)
Native Android with Kotlin and Jetpack Compose
BLE integration with physical hardware
Offline-first apps with background sync
Node.js/TypeScript APIs with PostgreSQL/MongoDB
HDFC payment gateway Integration
Web Applications using React.js