Arif U.

🚀 I help startups and growing businesses build scalable, reliable, and high-performance mobile & web applications using technologies like React Native, React.js, Firebase, and Node.js. With over 5 years of hands-on experience, ✅ I’ve earned a Top Rated Plus badge on Upwork for consistently delivering quality solutions that work flawlessly across both iOS and Android platforms. My primary focus is React Native app development, backed by deep expertise in JavaScript, TypeScript, Redux, Context API, Firebase, Node.js, and REST APIs. In addition to my individual expertise, I lead a compact and skilled team of mobile and backend developers. Together, we support startups and SaaS companies in building complete, end-to-end products — from MVPs to production-grade platforms. We work closely with founders, product teams, and digital agencies seeking long-term, dependable technical partners. 🏷 Industries I’ve Worked In: 🏃 Health & Fitness 🎓 E-Learning & Online Education 🚕 Ride-Hailing & On-Demand Apps 💻 SaaS & Subscription Platforms 🛒 Marketplaces & E-Commerce 💬 Social Networking 💳 Fintech & Payment Solutions 📦 Delivery & Field Service Management 🔧 Core Tech Stack: React Native (iOS & Android, Expo & Bare Workflow) React.js / Next.js Firebase (Auth, Firestore, Realtime DB, Cloud Functions, Notifications) Node.js / Express.js / REST APIs State Management (Redux, Context API, Zustand) Push Notifications (FCM, APNs) Integrations: Google Maps, Stripe, Twilio, Razorpay, OneSignal, WebRTC Databases: MongoDB, PostgreSQL App Store & Play Store Deployment & Support 💼 Services I Offer: ✅ Cross-platform mobile development (React Native / Expo) ✅ UI implementation from Figma, Sketch, Adobe XD ✅ Integration with third-party services (Payments, Maps, Chat, Analytics, etc.) ✅ Firebase setup & backend development ✅ Real-time features using Firebase or WebSockets ✅ MVPs for startups — fast, reliable, and scalable ✅ Ongoing support & app maintenance 📩 Let’s Discuss Your Idea! If you're seeking a trustworthy and experienced developer to build, launch, and support your app — from concept to deployment — I’d love to chat and explore how we can bring your project to life.