Deepak C.

Senior Mobile App developer|Marketplaces & Payment Integration

iOS, Android & React Native Engineer with 9+ years of experience, 100% Job Success Score, and $200K+ earned on Upwork. I build mobile apps that handle real users, real payments, and real scale not just demos. From marketplace platforms to field service apps to real-time messaging systems, I own the full stack: mobile UI through backend APIs through deployment. What I specialize in: • Marketplace & payment apps: Stripe, Razorpay, PayPal, escrow flows, webhooks, and failure handling • Field service & delivery apps: real-time tracking, route optimization, live agent monitoring (Mapbox, Google Maps) • Social & messaging platforms: secure real-time chat, scalable backend architecture • End-to-end mobile development: iOS (Swift, SwiftUI), Android (Kotlin, Java), React Native, Flutter • Backend APIs: Node.js, Python, REST APIs, third-party integrations, Firebase • Analytics & tracking: GA4, Facebook Pixel, in-app event tracking How I work: I think backend-first, so your app doesn't collapse at scale. I flag problems before they become costly, suggest improvements proactively, and write clean architecture not quick fixes you'll need to undo in 6 months. Who I work with: Startups building their first scalable product. Businesses adding payments, subscriptions, or analytics to existing apps. Teams that need a reliable full-stack mobile partner who can own both sides and keep things moving. If your app needs to handle payments, scale smoothly, and actually work in production, let's talk.