Jakub Sys
Senior React Native Developer
Lublin Voivodeship, Poland
Summary
🤩
Rockstar🎓
Top SchoolJakub Sys is a Senior React Native Developer with eight years of experience transitioning from web (HTML, CSS, JavaScript, React, Redux, Sass) to mobile-first development. He has held senior roles at Callstack and now at Tellonym, bringing practical expertise in building performant cross-platform apps. As maintainer of react-native-pager-view, he contributes to the React Native ecosystem and helps shape core UI primitives used by many apps. His background includes both freelance projects and in-house product teams, giving him a strong mix of autonomy and collaboration skills. Based in Lublin Voivodeship, Poland, he pairs a master's degree in computer science with hands-on delivery experience across startups and larger engineering teams. Colleagues rely on him for pragmatic problem-solving and improving developer DX through open-source maintenance.
8 years of coding experience
7 years of employment as a software developer
Magister (Mgr) Informatyka, Magister (Mgr) Informatyka at Uniwersytet Marii Curie-Skłodowskiej w Lublinie
English, German
Github Skills (35)
uipageviewcontroller10
financial10
image-picker10
ios10
react-native10
textinput10
react-native-module10
camera10
chat10
android10
native-module10
viewpager10
collaboration10
android-viewpager10
react10
Programming languages (5)
Github contributions (5)
MrRefactor/App
Dec 2023 - Aug 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:1 review, 1 PR, 157 pushes in 8 months
artus9033/ExpensifyApp-proposals
Jan 2024 - Jan 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:13 pushes, 1 branch in 3 days
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