Tomek Czajecki
Engineering Manager at Expo
Helsinki, Finland
Summary
🤩
Rockstar🎓
Top SchoolTomek Czajecki is an engineering manager and former senior software engineer with nine years of experience building mobile and security-conscious software, currently leading teams at Expo in Helsinki. He blends hands-on React Native and iOS development—evidenced by navigation and animation refactors for the popular Rainbow Ethereum wallet—with a background in security and cloud computing from SECCLO, Aalto and KTH. Tomek moves comfortably between product-facing UI polish and deeper platform work, having improved build and navigation stacks while also interning on security at Ericsson. Known for a playful, pragmatic approach to code ("poking rectangles until they spark joy"), he remains active in open source and points collaborators to his GitHub and Twitter for the latest work.
9 years of coding experience
4 years of employment as a software developer
SECCLO Master's Programme in Security and Cloud Computing (Erasmus Mundus)Security and Cloud Computing, Security and Cloud Computing at Aalto UniversityKTH Royal Institute of TechnologyAGH University
Github Skills (4)
react-native10
ios10
ui-design9
react8
Programming languages (12)
Github contributions (5)
rainbow-me/rainbow
Jun 2019 - Oct 2022
🌈‒ the Ethereum wallet that lives in your pocket
Role in this project:
Mobile Developer (iOS)
Mobile Developer (iOS)Contributions:330 reviews, 237 commits, 105 PRs in 3 years 3 months
Contributions summary:Tomek primarily focused on refactoring and migrating the React Native application's navigation system. They updated the `src/screens/Routes.js` file, integrating new animation effects and transitioning to the latest version of `react-navigation-stack`. The commits show a deep understanding of navigation APIs and were implemented across several files, including those related to animations and modal transitions, suggesting a focus on enhancing the app's UI/UX. These changes included updating the build process.
pocketethereumreact-nativerainbowwallet
tchayen/triangolatte
Jul 2018 - Aug 2021
2D triangulation library. Allows translating lines and polygons (both based on points) to the language of GPUs.
Contributions:179 commits, 23 PRs, 146 pushes in 3 years 1 month
polygonslinesopengltranslatinggpus
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