Jan Ziemba
React Native Developer
Czechia
Summary
🤩
Rockstar🎓
Top SchoolJan Ziemba is a Senior React Native Developer with a decade of experience delivering full-stack, multiplatform apps from a single codebase for iOS, Android and web. He builds products end-to-end—ideation, architecture, implementation and releases—favoring clean architecture, accessibility and high performance. His work spans fintech, bookings and consumer apps, including rewriting legacy stacks to Expo + tRPC, full internationalization (Japanese and Arabic RTL), and an internal UI component library used at scale. An active open-source contributor, he’s improved React Native Material UI with iOS-specific styling and native animation optimizations. Based in Czechia, he balances shipping user-facing features with platform-level refinements and a side portfolio of AI-powered and creative apps.
10 years of coding experience
13 years of employment as a software developer
Bachelor's degree, Bachelor's degree at Silesian University in OpavaStřední průmyslová škola Karviná
Czech, English
Stackoverflow
462reputation
18kreached
4answers
2questions
Github Skills (13)
uikit10
ios10
react-native10
android10
animation9
material-design9
javascript8
xcode6
objective-c6
html6
css6
base646
react6
Programming languages (9)
Github contributions (5)
xotahal/react-native-material-ui
Sep 2017 - Jul 2018
Highly customizable material design components for React Native
Role in this project:
Mobile Developer (Android/iOS)
Mobile Developer (Android/iOS)Contributions:3 releases, 26 commits, 27 PRs in 10 months
Contributions summary:Jan primarily focused on enhancing the React Native Material UI library by addressing bugs and improving the user interface. They fixed issues related to toolbar functionality, such as the back button and search icon behavior. Additionally, they resolved click events in dialog subviews and optimized the snackbar component. The user also made changes to improve iOS-specific styling and animation performance, specifically addressing shadow props and using native animations.
reactreact-nativematerialmaterial-design-componentshighly-customizable
janziemba/react-native-basic-ui
Jan 2021 - Apr 2021
Easy to use UI components for React Native. Creating an app has never been easier! 🎉
Contributions:8 releases, 102 commits, 24 PRs in 2 months
react-nativeneverreactui-components
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