Rohit Chaudhary

React Native-focused full-stack developer with 2.1 years of experience delivering production-grade Android and iOS apps using React Native CLI, TypeScript, Redux Toolkit, and React Navigation. Specialized in cross-platform mobile architecture, offline-first UX, performance optimization, and end-to-end feature ownership including API design, testing, and release management. Proficient in MERN stack (MongoDB, Express.js, React.js, Node.js) and Next.js, integrating RESTful APIs with scalable backends following clean-code and SOLID practices.

Hands-on experience with AWS (EC2, S3, CloudFront), Docker, Nginx, and CI/CD pipelines for deploying and operating high-availability systems on Linux servers.

React Native & MERN Stack Developer at MemoyoAnimations (2024-03 – Present)

• Mobile Learning Management System (React Native) – Built a cross-platform LMS application from scratch using React Native CLI, TypeScript, Redux Toolkit, React Navigation, and modular atomic design components, delivering role-based mobile experiences for Admin, Instructor, and Student.
• Implemented secure login with JWT-based authentication, deep-linked navigation, guarded routes, and token refresh flows to keep sessions stable on low-connectivity devices.
• Developed course catalog, enrollment, attendance, and progress-tracking features backed by RESTful APIs, reusable UI widgets, pull-to-refresh, optimistic UI updates, and skeleton loaders for smooth UX.
• Engineered a dynamic quiz and assessment engine using Formik + Yup with multiple question types, timers, conditional rendering, and auto-grading, reducing manual evaluation time by 60%.
• Added file upload for PDFs, assignments, and lecture videos to AWS S3 with upload progress, retry queues, and background sync.
• Added offline-friendly content access and submission handling to improve usability in low-network environments and reduce session interruptions.
• Improved navigation flow and state persistence across screens, reducing reloads and keeping user sessions stable during app usage.
• Manufacturer & Service Provider Marketplace (React Native) – Developed and maintained a multi-role marketplace app using React Native CLI, Redux Toolkit, and TypeScript, serving manufacturers, service providers, and end-users with separate onboarding, KYC, and dashboard flows.
• Created a shared design system with reusable components (inputs, cards, filters, bottom sheets, toasts) to speed up feature delivery and keep branding consistent across Android and iOS.
• Implemented advanced forms with Formik and Yup covering conditional validation, multi-image uploads, and Excel bulk import for product catalogs, reducing vendor onboarding time.
• Integrated Google Maps API and Google Places API for geo-tagging, address auto-complete, and proximity-based search.
• Configured Firebase Cloud Messaging (FCM) push notifications and Razorpay payment flows with webhook verification, retry logic, and transaction history screens.
• Tuned performance using React.memo, useCallback, useMemo, lazy loading, and FlatList virtualization to keep the app smooth and memory efficient.
• Added search and filter optimization for vendor and service discovery, improving browsing speed and relevance.
• Built transaction history and status views for payments, orders, and service requests, helping users track activity more clearly.
• E-Commerce Web Platform (MERN, Next.js, AWS DevOps) – Designed and implemented a full-stack e-commerce platform using MERN stack with React.js/Next.js frontend, Express.js/Node.js backend, and MongoDB for users, products, orders, and inventory.
• Delivered a responsive, SEO-optimized storefront using Next.js SSR, dynamic routing, and image optimization, combined with product search, filters, and PWA-ready checkout flows.
• Secured the application with JWT-based authentication, role-based ACL, server-side validation, rate-limiting, and guarded API endpoints.
• Integrated Razorpay payment gateway for online payments, built robust order lifecycle and refund APIs, and improved payment error handling.
• Containerized services with Docker, deployed Node.js/Express APIs on AWS EC2 behind Nginx reverse proxy, and served static assets from AWS S3 via CloudFront CDN.

B.Sc. in Information Technology – Gondwana University, India (2019)