Shubham Handergule

React Native Developer with 3+ years of experience building and shipping production iOS and Android apps using React Native, TypeScript, and JavaScript (ES6+). Delivered apps on the App Store and Google Play across e-commerce, fitness/IoT, and real-time delivery domains. Strong in Redux Toolkit, React Navigation, REST API integration, BLE and native module development in Swift and Kotlin, push notifications (FCM, OneSignal, Notifee), CodePush OTA updates, and performance optimization (up to 40% faster app performance, 35% lower load time).

Also experienced in ReactJS for web. Mentored junior engineers and led a team of 4 developers through code reviews and cross-functional collaboration with UI/UX and backend teams.

React Native Developer (Software Engineer) at TechieBears Pvt. Ltd. (2022-07 – Present)

• M2M Max Bazaar — Multi-Vendor E-Commerce & Food Ordering Platform (3 React Native Apps)
• Tech Stack: React Native, Redux, React Navigation, Razorpay, MSG91, Firebase Cloud Messaging, Socket.IO, OneSignal, Notifee, CodePush, Google Maps, FlashList, AWS CloudFront
• Built and maintained 3 cross-platform React Native apps (customer, vendor, delivery management) for a multi-vendor e-commerce and food ordering platform, keeping all three in sync without breaking functionality
• Developed the customer app end to end: home, categories, global search, multi-vendor and multi-product carts, restaurant browsing, wishlists, coupons, referrals, and profile settings
• Implemented real-time order tracking, live location updates, and background location tracking for delivery personnel using Socket.IO, Google Maps, and geolocation
• Improved app performance by 40% through rendering optimization, memoization, and efficient Redux state management
• Reduced initial load time by 35% using code splitting, lazy loading, CloudFront image optimization, FlashList, and skeleton loading screens
• Integrated Firebase Cloud Messaging, OneSignal, and Notifee for real-time order status and promotional push notifications; integrated Razorpay payment gateway and MSG91 SMS/OTP verification
• Implemented CodePush OTA updates, App Center monitoring, offline network-state awareness, and maps/geolocation for addresses and tracking
• Gravitix & Slimpathy — BLE Smart Fitness Tracker App (Live on App Store & Google Play)
• Tech Stack: React Native, BLE, Native Modules (Kotlin, Swift), Firebase, NativeWind
• Built Gravitix for iOS and Android with BLE pairing and sync, weight and body-metrics tracking, campaigns, insights, multi-member profiles, goals, reminders, history, and comparison views with PDF export
• Engineered Bluetooth Low Energy connectivity using custom native modules in Kotlin and Swift to bridge Android and iOS communication, enabling real-time data sync and local database storage
• Implemented automated Firebase push notifications for daily and weekly progress updates, nutrition tips, and goal tracking
• Reached 100+ downloads; tested BLE, PDF export, and runtime permissions handling extensively across Android and iOS devices
• Integrated third-party SDKs, optimized app bundle size to under 40MB, and built reusable UI with NativeWind, shared components, and responsive sizing
• SoulPlan & AstroGuide — Puja Services & Personalized Guidance (Live App)
• Tech Stack: React Native, ReactJS, Redux Toolkit, Firebase, Razorpay, JWT, MSG91, Zoom API, Google/Apple Sign-In
• Shipped SoulPlan across web and mobile with astrology services, e-commerce, booking, cart/checkout, and order tracking features
• Improved app performance by 30% by implementing Redux Toolkit, FlatList, and optimized state management
• Simplified core booking flows, reducing friction and driving 200+ bookings
• Integrated Firebase Cloud Messaging, MSG91 SMS/OTP verification, and Zoom handoffs for post-booking consultations
• Implemented Google and Apple Sign-In, JWT-backed API authentication, client-side validation, and standardized error handling
• Built reusable UI components and responsive layouts for a consistent experience across mobile and web
• Hamax Talent — Cast & Crew Hub (Live App)
• Tech Stack: React Native, Redux Toolkit, MMKV, NativeWind, Cloudinary
• Developed onboarding, multi-step profile registration, and secure login flows for actors, casting teams, and production professionals
• Integrated a secure payment gateway with backend payment-verification workflows
• Built Cloudinary-based media upload and image-processing features
• Implemented optimized local storage with MMKV to improve application performance
• Tech Stack: React Native, ReactJS
• Built session management for daily attendance, leave tracking, monthly reporting, and salary-slip generation
• Accelerated dashboard and app render speed by optimizing component structure, pagination, and re-renders
• Mentored junior engineers on React best practices, hooks, and component composition
• Tech Stack: ReactJS, PostgreSQL, Django REST Framework, AWS S3
• Developed scalable ReactJS frontend modules for rental, invoice, building, and project-management workflows
• Built reusable forms, modals, dropdown systems, and dynamic UI layouts
• Led a team of 4 frontend developers through code reviews and debugging sessions, coordinated via Zoho Projects

Bachelor of Science in Information Technology – University of Mumbai — Mumbai, Maharashtra (2022-05)

Secondary Education – Padmashri Annasaheb Jadhav Vidyalaya — Mumbai, Maharashtra (2019-05)