Ketan U.

🥇 Top Rated Plus • 🌟 10+ Years Experience • 🛠 18,000+ Hours Hi, I’m Ketan Ubhada, a senior React Native, Expo, and React Web developer who builds scalable, high-performance mobile and web applications backed by solid Node.js/Python backends and modern cloud infrastructure. I focus on delivering production-ready apps that are fast, maintainable, and built for long-term growth — not quick prototypes. 📱 React Native & Expo (Mobile Apps) ✅ Expo and Bare React Native apps from scratch ✅ Complex UI, animations, and performance optimization ✅ State management: Redux Toolkit, Zustand, Context API ✅ API handling with React Query and Axios ✅ Debugging crashes and fixing performance bottlenecks 🌐 React Web Development ✅ React.js and Next.js web applications ✅ Dashboards, admin panels, and SaaS platforms ✅ Responsive UI and reusable component architecture ✅ API integrations and performance optimization ⚙️ Backend Development (Node.js & Python) ✅ Express.js, Nest.js, FastAPI, and Django ✅ REST and GraphQL APIs ✅ WebSockets and real-time features ✅ Secure authentication using JWT and OAuth 💳 Payments, Subscriptions, and User Engagement ✅ Stripe, PayPal, and Razorpay integrations ✅ In-app subscriptions using RevenueCat ✅ Push notifications and user journeys with Braze and OneSignal 📈 Analytics, Attribution, and Monitoring ✅ Firebase Analytics, Mixpanel, and Amplitude ✅ Attribution with AppsFlyer and Adjust ✅ Crash reporting with Sentry ✅ Feature flags and session replay using PostHog ☁️ Cloud and Database ✅ AWS, Firebase, and GCP ✅ MongoDB, PostgreSQL, MySQL, SQLite, Realm 🧠 AI-Native Apps and Automation ✅ AI features integrated into apps ✅ n8n workflows and AI-powered backends ✅ Rapid development using modern AI tools Why clients hire me ✔ Clean, scalable architecture ✔ Strong debugging and problem-solving skills ✔ End-to-end ownership (frontend and backend) ✔ Clear communication and reliable delivery I’ve worked with startups, SaaS products, B2B platforms, and enterprise apps from MVP to scale. If you want your app built the right way from day one, let’s talk. Invite me and let’s get started.