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React Native and MERN full-stack engineer with 5 years of experience building production mobile and web apps. Shipped cross-platform iOS/Android apps (React Native + TypeScript) and backend services (Node.js/Express) while working at Walmart on internal apps used by 1.6M+ associates daily. End-to-end feature delivery across authentication, real-time communication (Socket.io), push notifications (Firebase), state management (Redux Toolkit/RTK Query/Saga/MobX), and CI/CD automation (Azure DevOps/Jenkins/GitHub Actions, Fastlane, CodePush). Strong focus on test coverage (Jest, Detox), performance optimization, and maintainable, scalable architectures.…React Native and MERN full-stack engineer with 5 years of experience building production mobile and web apps. Shipped cross-platform iOS/Android apps (React Native + TypeScript) and backend services (Node.js/Express) while working at Walmart on internal apps used by 1.6M+ associates daily. End-to-end feature delivery across authentication, real-time communication (Socket.io), push notifications (Firebase), state management (Redux Toolkit/RTK Query/Saga/MobX), and CI/CD automation (Azure DevOps/Jenkins/GitHub Actions, Fastlane, CodePush). Strong focus on test coverage (Jest, Detox), performance optimization, and maintainable, scalable architectures.

Muhammad Ahsan Hussain

Full Stack Developer, Software Engineer, App Developer, +3

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React Native and MERN full-stack engineer with 5 years of experience building production mobile and web apps. Shipped cross-platform iOS/Android apps (React Native + TypeScript) and backend services (Node.js/Express) while working at Walmart on internal apps used by 1.6M+ associates daily. End-to-end feature delivery across authentication, real-time communication (Socket.io), push notifications (Firebase), state management (Redux Toolkit/RTK Query/Saga/MobX), and CI/CD automation (Azure DevOps/Jenkins/GitHub Actions, Fastlane, CodePush). Strong focus on test coverage (Jest, Detox), performance optimization, and maintainable, scalable architectures.…React Native and MERN full-stack engineer with 5 years of experience building production mobile and web apps. Shipped cross-platform iOS/Android apps (React Native + TypeScript) and backend services (Node.js/Express) while working at Walmart on internal apps used by 1.6M+ associates daily. End-to-end feature delivery across authentication, real-time communication (Socket.io), push notifications (Firebase), state management (Redux Toolkit/RTK Query/Saga/MobX), and CI/CD automation (Azure DevOps/Jenkins/GitHub Actions, Fastlane, CodePush). Strong focus on test coverage (Jest, Detox), performance optimization, and maintainable, scalable architectures.

Available to hire

React Native and MERN full-stack engineer with 5 years of experience building production mobile and web apps. Shipped cross-platform iOS/Android apps (React Native + TypeScript) and backend services (Node.js/Express) while working at Walmart on internal apps used by 1.6M+ associates daily.

End-to-end feature delivery across authentication, real-time communication (Socket.io), push notifications (Firebase), state management (Redux Toolkit/RTK Query/Saga/MobX), and CI/CD automation (Azure DevOps/Jenkins/GitHub Actions, Fastlane, CodePush). Strong focus on test coverage (Jest, Detox), performance optimization, and maintainable, scalable architectures.

Skills

Experience Level

Expert

Expert

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Intermediate

Language

English

Advanced

Work Experience

React Native Developer | MERN Stack Engineer at Carlovers LLC

July 1, 2025 - Present

Design and build a dual-platform service marketplace from zero: Carlovers Car Service (customer-facing) and Garage Global (workshop-facing), both live on iOS and Android from a single React Native TypeScript codebase. Implement OAuth and JWT authentication with secure login, session refresh, and role-based access control separating customer and workshop-employee scopes. Build the end-to-end service request flow including workshop search, slot selection, booking confirmation, and Firebase Cloud Messaging for real-time push notifications on status changes without polling. Develop Garage Global connected to the same Node.js and MongoDB backend to route requests to the correct workshop employee accounts and eliminate manual job dispatch. Add Socket.io live chat with MongoDB-backed message persistence and integrate an in-app scheduling experience using React Native Big Calendar with a custom DateTime picker. Automate iOS/Android releases using Fastlane and reduce release effort via CodePush

React Native Developer at Carlovers LLC

July 1, 2025 - Present

Design and build a dual-platform service marketplace from zero: Carlovers Car Service (customer-facing) and Garage Global (workshop-facing) using a single React Native TypeScript codebase across iOS and Android. Implement authentication with OAuth and JWT including session refresh and role-based access for customer vs workshop employee scopes. Build service request flow (search, slot selection, booking confirmation) and deliver real-time push notifications via Firebase Cloud Messaging without polling. Develop Garage Global as a standalone app connected to the same Node.js/MongoDB backend, routing requests to correct workshop employee accounts. Add Socket.io-backed in-app chat with MongoDB message persistence so chat history survives restarts. Integrate scheduling UI using React Native Big Calendar with custom DateTime picker for weekly visualization and fewer overlap incidents. Automate mobile releases with Fastlane lanes for code signing and App Store/Google Play submissions, and use

Software Engineer III at Walmart

June 1, 2022 - July 1, 2025

Delivered features and bug fixes on me@walmart and me@campus, the primary associate apps covering scheduling, pay, benefits, and campus onboarding for 1.6M+ Walmart employees across iOS and Android. Owned cross-platform component development in TypeScript, building reusable hooks and screen-level components aligned with Figma specs, passing accessibility audits, and reaching production through a two-week sprint cycle. Applied Redux Toolkit Query for server state management and Redux Saga for complex async flows, simplifying areas that previously mixed thunks with local state. Shipped a B2B transaction module to streamline supplier order and approval workflows and reduce manual steps and error rates. Owned CI/CD pipelines in Azure DevOps and Jenkins to run lint/unit/integration tests on every pull request, and containerized services on AWS using Docker and Kubernetes. Optimized FlatList rendering for large data grids (windowing, memoization, keyExtractor tuning) to reduce scroll jank.

React Native Developer at CS Tech Softwares

September 1, 2020 - December 1, 2021

Developed cross-platform mobile applications using React Native for iOS and Android. Built reusable UI components and modules in collaboration with designers to translate UI/UX into functional mobile interfaces. Managed application state using Redux and MobX to keep complex UI flows responsive and consistent. Implemented performance optimizations (code splitting and lazy loading) and integrated Stripe for secure online transactions. Applied SEO strategies to drive organic traffic. Actively debugged issues to ensure smooth user experience and minimize application crashes.