Tomasz Janiczek
Senior React Developer at Callstack
Wroclaw Metropolitan Area Poland
Summary
🤩
Rockstar🎓
Top SchoolTomasz Janiczek is a Senior React Developer with over 10 years of experience building front-end solutions across e-learning, AdTech, FinTech and e-commerce. A JavaScript specialist based in Wroclaw, he focuses on accessibility, localisation, front-end security and testable, maintainable code while advocating for agile practices and high code quality. He has shipped production features and bug fixes for widely used open-source projects like react-native-paper, improving UI components, performance and platform-specific issues. Tomasz blends hands-on component-level expertise with full-stack experience from roles at Callstack, Pragmatic Brains and Clearcode, and is noted for practical fixes that reduce UI flashes and improve input reliability.
10 years of coding experience
11 years of employment as a software developer
Wyższa Szkoła Humanistyczno-Ekonomiczna w Łodzi
Github Skills (12)
uikit10
react-native10
react10
typescript-types9
typescript9
typescripts9
material-design9
javascript8
jtest8
jes8
jestjs8
accessibility7
Programming languages (3)
Github contributions (5)
callstack/react-native-paper
Jan 2023 - Oct 2023
Material Design for React Native (Android & iOS)
Role in this project:
Front-end Developer
Front-end DeveloperContributions:57 reviews, 20 PRs, 31 pushes in 9 months
Contributions summary:Tomasz primarily contributed to the React Native Paper library, focusing on UI component enhancements and bug fixes. Their work included refactoring code to fix linting errors, addressing Android-specific elevation issues, improving the performance of the TextInput component, and fixing input label positioning. The user also updated the documentation with visual improvements to prevent initial screen flashes during load.
reactreact-native-androidreact-nativematerialios-android
TwigWorld/country-map
Feb 2016 - Sep 2016
Contributions:2 releases, 1 push, 1 branch in 7 months
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