Bartłomiej Tomczyk
Senior React & React Native Developer
Greater Poland Voivodeship
Summary
🤩
Rockstar🎓
Top SchoolBartłomiej Tomczyk is a Senior React & React Native developer with 11 years of hands-on experience building polished user interfaces and mobile apps, currently at Callstack. He combines deep knowledge of modern JavaScript (ES6+), testing (Jest, React Testing Library, Detox) and state management with practical CI/CD and containerization experience from roles at Merixstudio and Coders Lab. As a former team leader and instructor, he pairs technical delivery with mentoring and curriculum development, helping teams raise frontend quality and developer skills. He is detail-oriented and self-critical, driven by a pursuit of UI perfection and pragmatic testing culture. Based in Greater Poland, he has a background in running his own web studio, which gives him client-facing product sense alongside engineering rigor.
11 years of coding experience
9 years of employment as a software developer
inżynier, Programowanie aplikacji internetowych, inżynier, Programowanie aplikacji internetowych at Politechnika Częstochowska
English, Russian, Polish
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (38)
financial10
chat10
collaboration10
react-native9
webpack9
react9
material-design8
android8
bundler8
code-splitting8
typescript8
react-hooks7
ecosystem7
higher-order-component7
ios7
Programming languages (5)
Github contributions (5)
barttom/App-expensify
Sep 2023 - Apr 2024
Welcome to New Expensify: a complete re-imagination of financial collaboration, centered around chat. Help us build the next generation of Expensify by sharing feedback and contributing to the code.
Contributions:40 reviews, 21 PRs, 210 pushes in 6 months
barttom/fake-ecommerce
Jun 2023 - Jan 2025
Contributions:47 PRs, 49 pushes, 46 branches in 1 year 6 months
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