12/18/2025 updated
100 % available
Senior Mobile App Developer - React Native & Cross-Platform Development
Battambang, Cambodia
Only remote
Bachelor of Information TechnologyAbout me
Senior Mobile App Developer with over 6 years of experience building fast, scalable, and user-focused mobile apps using React Native and Expo. I focus on clean architecture, reusable components, and performance optimization to ensure apps feel smooth and reliable on both iOS and Android.
Clean Code PrinciplesJavaScriptArtificial IntelligenceApple Push Notification ServiceArchitectureArchitectural DesignMobile Application DevelopmentProgram OptimizationDatabasesContinuous IntegrationProgramming ToolsGitHubPush TechnologyMobile Application SoftwarePerformance Tuning
React Native Development
Cross-platform mobile application development using React Native and Expo for iOS and Android platforms with advanced performance optimization
Mobile App Architecture
Scalable mobile app architecture design with clean code practices, reusable components, and RESTful API integrations
Performance Optimization
Advanced mobile app performance optimization including lazy loading, async strategies, and code optimization techniques
JavaScript & TypeScript
Modern JavaScript and TypeScript development for mobile applications
Redux State Management
Redux and Redux Toolkit for complex state management in mobile applications
Push Notifications
Implementation of push notifications using FCM and APNS for mobile platforms
CI/CD Pipeline
Continuous integration and deployment using Fastlane and EAS for mobile app releases
Firebase Integration
Firebase services integration including analytics, authentication, and real-time database
AI Development Tools
Integration of AI tools including Claude AI, ChatGPT, and GitHub Copilot for development enhancement
Cross-platform mobile application development using React Native and Expo for iOS and Android platforms with advanced performance optimization
Mobile App Architecture
Scalable mobile app architecture design with clean code practices, reusable components, and RESTful API integrations
Performance Optimization
Advanced mobile app performance optimization including lazy loading, async strategies, and code optimization techniques
JavaScript & TypeScript
Modern JavaScript and TypeScript development for mobile applications
Redux State Management
Redux and Redux Toolkit for complex state management in mobile applications
Push Notifications
Implementation of push notifications using FCM and APNS for mobile platforms
CI/CD Pipeline
Continuous integration and deployment using Fastlane and EAS for mobile app releases
Firebase Integration
Firebase services integration including analytics, authentication, and real-time database
AI Development Tools
Integration of AI tools including Claude AI, ChatGPT, and GitHub Copilot for development enhancement
Experience
Professional experience5 - 10 years
Freelancer since2019
Languages
EnglishFluent
Project history
Leading development of high-performance features for a cross-platform real estate app using React Native + Expo. Delivered pixel-perfect, responsive UIs achieving 100% design fidelity through close collaboration with design team. Improved app performance by 40% through advanced profiling, lazy loading, and async optimization strategies.
Led development of core mobile features used by 50K+ users, significantly improving app engagement by 45%. Architected scalable RESTful API integrations with Redux, reducing state management complexity by 60%. Achieved 35% reduction in initial load times and 25% decrease in memory footprint through performance optimization.
Developed and deployed mobile applications using React Native for both iOS and Android platforms. Built responsive UI components from Figma designs ensuring pixel-perfect implementation and brand consistency. Integrated REST APIs for authentication, data fetching, and real-time updates.