Tamer Köşe
Software Engineer / React Native Developer
React Native Developer with 3+ years of experience building and shipping production mobile applications to App Store, Play Store, and Huawei AppGallery.
About
I'm a production-focused Software Engineer specializing in React Native development, with a proven track record of building and deploying mobile applications to major app stores.
My expertise lies in developing cross-platform mobile applications that deliver exceptional user experiences while maintaining high code quality and performance standards. I have hands-on experience with native module development, store deployment processes, and managing the complete lifecycle of production applications.
I'm passionate about writing clean, maintainable code and staying current with the latest mobile development trends. My work emphasizes scalability, performance optimization, and seamless integration with backend services.
Experience
INTIME INFO SOFTWARE SOLUTIONS
Software Engineer / React Native Developer
- •Developed and maintained production React Native applications deployed to App Store, Play Store, and Huawei AppGallery
- •Built native modules and integrated third-party SDKs for advanced mobile functionality
- •Collaborated with cross-functional teams to deliver high-quality mobile applications on tight deadlines
- •Optimized app performance and reduced crash rates through systematic debugging and code refactoring
- •Implemented CI/CD pipelines for automated testing and deployment processes
- •Mentored junior developers and contributed to code review processes
WHOMII
React Native Developer
- •Developed a psychology-focused mobile application using React Native
- •Implemented complex state management solutions for real-time user interactions
- •Integrated payment gateways and subscription management systems
- •Collaborated with UX/UI designers to implement pixel-perfect designs
- •Participated in agile development processes and sprint planning
Projects
İntime İK – HR & Workforce Management Super App
A production-ready HR and workforce management super app developed and published for enterprise use.
My Contribution
I played an active role in developing the mobile application from scratch using React Native. I implemented core features including background and foreground location tracking, push notification systems, and local data storage. I worked with Firebase, Redux, and SQLite for state and data management, contributed to native module development using Swift and Kotlin/Java, and participated in publishing and update processes on App Store, Google Play Store, and Huawei AppGallery.
Tech Stack
Platforms
Enterprise Process Management Mobile App
An internal enterprise mobile application designed to manage and optimize business processes.
My Contribution
I contributed to the development and maintenance of a large-scale enterprise mobile application. My work focused on bug fixing, improving application stability, and adapting the existing codebase to enterprise requirements.
Tech Stack
Platforms
Whomii – Psychology & Mental Wellness App
A bilingual (Turkish & English) mobile application focused on psychology and mental wellness.
My Contribution
I developed the mobile application using React Native and Expo, integrated Firebase services, implemented push notifications, and managed state using Redux Toolkit. I handled API integrations, database management, and was responsible for publishing and updating the app on App Store and Google Play Store.