M R Kishore Kumar
React Native Engineer
I build high-performance cross-platform mobile applications for iOS and Android. Passionate about React Native, performance optimization, scalable architecture, analytics integration, and delivering seamless user experiences for millions of users.
Technologies I work with
React Native
Building scalable cross-platform mobile applications for iOS and Android using React Native, Expo, and modern architecture.
JavaScript & TypeScript
Developing maintainable, high-performance applications using ES6+, TypeScript, React, Redux, and Redux Toolkit.
Mobile Performance
Optimizing app performance, reducing bundle sizes, improving startup time, and delivering smooth user experiences.
Analytics & Growth
Google Analytics, Adobe Analytics, AppsFlyer, MoEngage, CleverTap, and event tracking for data-driven product decisions.
Cloud & Integrations
REST APIs, Firebase, AWS, API Gateway, Secrets Manager, Juspay Payments, and third-party SDK integrations.
Tools & Workflow
Git, GitHub, Codemagic, Xcode, Android Studio, Figma, Agile, Code Reviews, and CI/CD workflows.
Professional Journey
- Delivered 20+ React Native features for an e-commerce app with over 1M+ downloads.
- Led frontend development for the Gulf region's first Quick Delivery Service.
- Built an in-house Recently Viewed widget, saving approximately $220K per year.
- Integrated Google Analytics, AppsFlyer, and MoEngage, increasing user engagement by 150%.
- Resolved 100+ production issues, improved app performance, and mentored junior developers.
- Delivered 30+ features for the Pantaloons mobile app with over 10M+ downloads.
- Designed and implemented the frontend payment architecture using Juspay.
- Reduced OTA update size by 15% through build and bundle optimization.
- Integrated AWS Secrets Manager, API Gateway validation, and Adobe Analytics.
- Upgraded React Native version, improving overall app performance by 10%.
- Built a browser-based JavaScript code editor with real-time compilation.
- Developed reusable React components, reducing development time by 25%.
- Optimized application performance and improved page load speed.
- Integrated CMS solutions for dynamic content management.
Things I've Built
RunJS
A browser-based JavaScript playground built with Next.js that allows users to write, compile, and execute JavaScript instantly without a backend. Features live output, syntax highlighting, and error handling.
Live Demo →Stubby
A full-stack URL shortener built with Express.js and MongoDB. Includes click analytics, REST APIs, custom short links, and automatic handling of expired and invalid URLs.
View on GitHub →Sudosavy
An offline-first Sudoku game built with React Native featuring dynamic puzzle generation, multiple difficulty levels, progress saving, and smooth cross-platform performance.
View on GitHub →Portfolio Website
A responsive developer portfolio built with HTML, CSS, and JavaScript, showcasing my professional experience, technical skills, and personal projects with a clean, modern design.
Visit Website →