Shaiv S.

🚀 𝟓𝟎+ 𝐀𝐩𝐩𝐬 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐞𝐝 | 𝟓 𝐓𝐨𝐩-𝐂𝐡𝐚𝐫𝐭𝐢𝐧𝐠 𝐀𝐩𝐩𝐬 | 𝐑𝐞𝐚𝐜𝐭 𝐍𝐚𝐭𝐢𝐯𝐞 | 𝐑𝐞𝐚𝐜𝐭.𝐣𝐬 | 𝐄𝐱𝐩𝐨 | 𝐓𝐲𝐩𝐞𝐒𝐜𝐫𝐢𝐩𝐭 | 𝐅𝐢𝐫𝐞𝐛𝐚𝐬𝐞 | 𝐀𝐏𝐈 & 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 | 𝐒𝐃𝐊 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 | 𝐏𝐚𝐲𝐦𝐞𝐧𝐭 𝐆𝐚𝐭𝐞𝐰𝐚𝐲𝐬 | 𝐖𝐞𝐛𝐒𝐨𝐜𝐤𝐞𝐭𝐬 I’m a Full-Stack Developer with 5+ years of experience delivering high-performance, scalable web and mobile applications. From building smooth, cross-platform mobile apps using React Native (CLI & Expo) to handling robust backend and REST API integrations, I provide end-to-end solutions that are reliable, secure, and user-centric. 🌐 𝐌𝐨𝐛𝐢𝐥𝐞 𝐃𝐨𝐦𝐚𝐢𝐧 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 🏆 𝐒𝐩𝐨𝐫𝐭𝐬 𝐁𝐞𝐭𝐭𝐢𝐧𝐠 & 𝐅𝐚𝐧𝐭𝐚𝐬𝐲 𝐀𝐩𝐩𝐬 (Live odds, leaderboards, real-time sync) 📦 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐲 & 𝐓𝐫𝐚𝐜𝐤𝐢𝐧𝐠 𝐏𝐥𝐚𝐭𝐟𝐨𝐫𝐦𝐬 (Live updates, order management, maps) 🍽️ 𝐑𝐞𝐬𝐭𝐚𝐮𝐫𝐚𝐧𝐭 & 𝐏𝐎𝐒 𝐒𝐲𝐬𝐭𝐞𝐦𝐬 (Menu, QR ordering, admin control panels) 🏪 𝐄-𝐜𝐨𝐦𝐦𝐞𝐫𝐜𝐞 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩𝐬 (Cart, checkout, payment gateway integration) 🔐 𝐒𝐞𝐜𝐮𝐫𝐞 𝐋𝐨𝐠𝐢𝐧 & 𝐀𝐮𝐭𝐡 𝐅𝐥𝐨𝐰𝐬 (Firebase Auth, OTP, biometric, JWT, OAuth2) 🎯 𝐀𝐈-𝐏𝐨𝐰𝐞𝐫𝐞𝐝 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩𝐬 (ChatGPT, image generation, intelligent search) 🎥 𝐀𝐮𝐝𝐢𝐨/𝐕𝐢𝐝𝐞𝐨 𝐂𝐚𝐥𝐥𝐢𝐧𝐠 & 𝐒𝐭𝐫𝐞𝐚𝐦𝐢𝐧𝐠 𝐀𝐩𝐩𝐬 (Twilio, OpenTok, WebRTC) 🧱 𝐖𝐞𝐛𝟑 & 𝐁𝐥𝐨𝐜𝐤𝐜𝐡𝐚𝐢𝐧 𝐀𝐩𝐩𝐬 (Wallet integration, smart contracts, NFT marketplaces, token rewards) 🧠 𝐂𝐨𝐫𝐞 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 💻 𝐌𝐨𝐛𝐢𝐥𝐞 𝐀𝐩𝐩 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 • React Native (CLI & Expo), TypeScript, Redux Toolkit, Context API • Firebase (Auth, Firestore, Realtime DB, Cloud Functions, Push Notifications) • Real-time features using Socket.IO, WebSockets, and Peer.js • Cross-platform animations, gestures, and smooth transitions using Reanimated & Gesture Handler • Deep linking, QR/barcode scanning, background services, and local storage • Offline-first apps using AsyncStorage, SQLite, and Redux Persist 🌐 𝐖𝐞𝐛 & 𝐁𝐚𝐜𝐤𝐞𝐧𝐝 𝐃𝐞𝐯𝐞𝐥𝐨𝐩𝐦𝐞𝐧𝐭 𝐄𝐱𝐩𝐞𝐫𝐭𝐢𝐬𝐞 • React.js, Next.js, TypeScript, Redux Toolkit, React Query, Context API • Backend Integration using REST APIs, GraphQL, Firebase Cloud Functions • Authentication & Authorization with Firebase Auth, OAuth2, JWT • Dynamic server-side rendering (SSR) and static site generation (SSG) with Next.js • Database Integration with MongoDB, Firestore, Realtime DB, and SQLite • Real-time communication with Socket.IO, WebSockets, and Peer.js • Form handling, validation (React Hook Form, Yup), and API error management • Deployment & DevOps: Firebase Hosting, Vercel, GitHub Actions, CI/CD pipelines 🔌 𝐒𝐃𝐊 & 𝐀𝐏𝐈 𝐈𝐧𝐭𝐞𝐠𝐫𝐚𝐭𝐢𝐨𝐧 • Payment SDKs: Apple In-App Purchase, Stripe, Braintree, Paystack • Communication SDKs: Twilio, WebRTC, OpenTok, Sinch • Multimedia SDKs: YouTube, AdMob, Crashlytics, Google Maps • Wallet & Blockchain Integration: MetaMask, WalletConnect, Web3, NFTs • AI & LLM APIs: OpenAI (ChatGPT), Gemini, Leonardo AI 🔁 𝐒𝐭𝐚𝐭𝐞 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭 & 𝐃𝐚𝐭𝐚 𝐇𝐚𝐧𝐝𝐥𝐢𝐧𝐠 • Redux Toolkit, RTK Query, React Query, Zustand, Context API • Real-time data sync using Firebase Realtime DB & custom WebSocket setups • API integration with caching, retries, and background refresh strategies 🧪 𝐓𝐞𝐬𝐭𝐢𝐧𝐠 & 𝐃𝐞𝐛𝐮𝐠𝐠𝐢𝐧𝐠 • Unit Testing with Jest • E2E Testing with Detox & Appium • Crash reporting and analytics using Firebase Crashlytics, Sentry ✅ 𝐖𝐡𝐲 𝐖𝐨𝐫𝐤 𝐖𝐢𝐭𝐡 𝐌𝐞? 𝐄𝐧𝐝-𝐭𝐨-𝐄𝐧𝐝 𝐃𝐞𝐥𝐢𝐯𝐞𝐫𝐲: Full-stack capable – from mobile app to backend and deployment 𝐑𝐞𝐚𝐥-𝐓𝐢𝐦𝐞 & 𝐎𝐟𝐟𝐥𝐢𝐧𝐞 𝐀𝐩𝐩𝐬: Proven ability to build complex real-time or offline-first mobile experiences 𝐑𝐚𝐩𝐢𝐝 𝐈𝐭𝐞𝐫𝐚𝐭𝐢𝐨𝐧 & 𝐂𝐥𝐞𝐚𝐧 𝐂𝐨𝐝𝐞: Scalable architecture, modular components, and maintainable code 𝐂𝐥𝐢𝐞𝐧𝐭-𝐅𝐨𝐜𝐮𝐬𝐞𝐝: Agile development with clear communication, sprint planning, and progress reporting 💬 Let’s build polished, powerful, and scalable Applications that stand out — whether it’s a live sports platform, fintech product, social app, or anything in between.