Jan Jaworski
React Developer
Wrocław, Lower Silesian Voivodeship, Poland
Summary
🤩
RockstarJan Jaworski is a React developer with nine years of experience building performant web and mobile applications, currently improving video SDKs and high-traffic Next.js e-commerce sites at Callstack. He combines deep front-end expertise (React, React Native, TypeScript) with practical backend and devops skills (C#, Linux, Docker, Azure DevOps) to shave bundle sizes, migrate large codebases, and lift Lighthouse scores dramatically. Jan has driven architecture and testing improvements—adopting TypeScript, React Query, Jest/MSW and Playwright—and contributed to OSS like React Native Paper while sharing knowledge at React conferences. Early work spanned Angular, Redux and IoT-style dashboards, and he also helped internationalize the popular Grid Garden CSS-learning game, translating it into multiple European languages. Based in Wrocław, he brings a pragmatic, quality-first approach to front-end engineering and cross-platform developer experience.
9 years of coding experience
Stackoverflow
139reputation
16kreached
4answers
6questions
Github Skills (19)
javascript10
translation10
css10
translater10
localization10
translate10
translator10
translators10
gameplay9
videogames9
user-manual7
oracle6
angular6
react6
repeat6
Programming languages (18)
Github contributions (5)
thomaspark/gridgarden
Apr 2017 - Apr 2017
A game for learning CSS grid layout 🥕
Role in this project:
Localization / Internationalization Specialist
Localization / Internationalization SpecialistContributions:17 commits, 3 PRs, 3 comments in 5 days
Contributions summary:Jan primarily contributed to translating the game's instructions and UI elements into various languages, including Polish, French, and other European languages. Their work involved modifying the `js/messages.js`, `js/levels.js`, `index.html`, and `js/docs.js` files to add and update language translations. This effort broadened the game's accessibility and user base by supporting multiple languages.
css-gridcsscssgridgame
jaworek/mac-os-dotfiles
Feb 2021 - Apr 2023
Contributions:30 pushes in 2 years 2 months
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