Jakub Adamczyk
Staff React Native Engineer
Lower Silesian Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolJakub Adamczyk is a Staff React Native Engineer with nine years of mobile-first experience, currently shaping mobile developer experience at Aave Labs after senior roles at Phantom and Rainbow. He specializes in React Native and TypeScript, with a track record of shipping performant, user-focused wallets and banking apps—most notably contributions to the popular Rainbow Ethereum wallet. Jakub combines hands-on implementation (UI/UX improvements, optimized interactions) with task creation and consulting, having authored React Native challenges for Codility and worked across startups and agencies. Outgoing and communicative, he regularly presents technical concepts publicly and enjoys turning performance puzzles into elegant, practical solutions. Based in Lower Silesia, Poland, he also engages with the crypto/dev community (jkadamczyk.eth), blending product-minded thinking with deep mobile engineering craft.
10 years of coding experience
9 years of employment as a software developer
High School, Mathcematics, Physics and Chemistry, High School, Mathcematics, Physics and Chemistry at II Liceum Ogólnokształcące im. Andrzeja Frycza Modrzewskiego w RybnikuBachelor of Engineering - BE, Computer Science, Bachelor of Engineering - BE, Computer Science at AGH University of Krakow
Polish, English, French
Stackoverflow
41reputation
1kreached
6answers
1question
Github Skills (16)
uid10
ios10
react-native10
mobile-development10
front-end-development10
ui-design10
react9
graphical-user-interface9
user-interface9
expo6
android-studio6
swift6
androidx6
android6
macos6
Programming languages (11)
Github contributions (5)
rainbow-me/rainbow
Apr 2022 - Jan 2023
🌈‒ the Ethereum wallet that lives in your pocket
Role in this project:
Mobile Developer (iOS & React Native)
Mobile Developer (iOS & React Native)Contributions:499 reviews, 336 commits, 298 PRs in 9 months
Contributions summary:Jakub primarily focused on enhancing the user interface and user experience within the Rainbow wallet, as suggested by the commit messages. The commits demonstrate a proficiency in React Native, addressing issues related to scrolling behavior in image previews and implementing and optimizing various UI components. The user also worked on improving user interactions with features like the hold-to-authorize button and the display of transaction details and rewards.
ethereum-walletreact-nativeethereumrainbowdefi
jkadamczyk/jkadamczyk
Jul 2020 - Jan 2026
Contributions:6 pushes, 1 branch in 5 years 7 months
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