Usama T.

React Native and Software Developer with 6+ years designing, writing and testing iOS and Android apps that reach the stores and stay there. Send me your idea, Figma file, crash log or half-finished repo and I will tell you honestly what it needs before you pay me anything. FACTS ABOUT ME - 100% Job Success Score across every contract I have completed on Upwork - 3,600+ hours logged, $50K+ earned, 12 contracts, zero disputes - Two of my longest React Native contracts ran 1,356 hours and 890 hours - clients keep me for years, not weeks - Apps I built are live right now on the App Store and Google Play - BS Software Engineering, University of Gujrat - Average response time under 4 hours WHAT I BUILD React Native Development - one codebase, iOS and Android, native modules when the job actually needs them React Native Expo - Expo managed and bare workflow, EAS Build, EAS Submit, over-the-air updates Firebase - Auth, Firestore, Cloud Functions, Push Notifications, Crashlytics, Analytics Mobile App Development - App Store and Google Play submission, TestFlight, release signing, store rejections fixed AI Integration - OpenAI and Claude APIs, AI chat, AI features inside mobile apps Backend - Node.js, Express, REST and GraphQL APIs, MongoDB, MySQL, WebSockets, AWS EC2 Native - Swift, SwiftUI, Kotlin, Jetpack Compose Web - React, Next.js, TypeScript for the dashboard behind your app WHERE I AM MOST USEFUL - Your React Native app crashes, or crashes only in the release build - Another developer started your app and disappeared halfway - Apple or Google rejected your submission and you do not know why - It works on Android and falls apart on iOS, or the other way round - Slow lists, heavy re-renders, huge bundle size, cold start takes forever - Expo to bare workflow, or an upgrade across several React Native versions - Push notifications, deep links, in-app purchases, offline sync, real-time chat - You need the app AND the backend AND the admin dashboard from one person INDUSTRIES I HAVE BUILT FOR Healthcare and Telemedicine App Development Mental Health and Therapy App Development Fitness, Health and Wellness App Development Wearables, HRV and Health Tracking Apps Food Delivery and Marketplace App Development Social and Community App Development Chat, Messaging and Real-Time App Development Admin Dashboards, CRM and Analytics Platforms Travel and Tourism Booking Apps E-Commerce and On-Demand Apps WHAT CLIENTS SAY "I had the pleasure of working with Usama on my mobile app development project using React Native, and I can confidently say that their skills and expertise in the field..." - React Native, 1,356 hours "Excellent developer! He did everything I asked and went above and beyond. Anything he didn't know, he quickly researched and found a solution immediately." - React Native Mobile Application "Usama has a very deep level understanding of so much (NodeJS, MongoDB, Mongoose, Javascript, caching). I learned a lot myself working with him." - Node.js Developer "Usama is great resource, and very professional. The whole team enjoyed working with him. Very knowledgeable and available anytime." - React / Node.js Developer HOW I WORK Step 1 - Free review. Send the repo, the crash, or a paragraph. I tell you what is actually wrong and whether I am the right person. Step 2 - Analyze and plan. Requirements analysis, architecture and milestones agreed before I write a line of code. Step 3 - Build. Updates you never have to chase. Step 4 - Test and document. Real devices, multiple OS versions, edge cases, impact checks on related modules, and written technical documentation for every new or updated feature. Step 5 - Launch and stay. App Store and Play Store submission handled, and I am still reachable afterwards. I use Claude Code, Cursor and GitHub Copilot to move faster, but every line ships reviewed. Speed without the sloppiness. Message me with a short summary of your project and I will reply within 24 hours. TOP SKILLS React Native | React Native Developer | React Native App Development | React Native Expo | Expo | Mobile App Development | Mobile App Developer | iOS App Development | iOS Developer | Android App Development | Android Developer | Cross-Platform App Development | Firebase | Mobile App Bug Fix | App Store Submission | Google Play Deployment | AI App Development | AI Integration | Node.js | Express | MongoDB | REST API | GraphQL | TypeScript | JavaScript | React | Redux | Healthcare App Development | Fitness App Development | MVP Development