Mateusz Psujek
Frontend Developer at Billennium
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolMateusz Psujek is a frontend developer based in Warsaw with nine years of experience building user-facing applications across startups and established tech teams. He progressed from QA and release roles into frontend engineering, bringing a pragmatic quality-focused mindset to UI development. His recent roles at CodiLime, LiveChat, Scalo and now Billennium reflect steady growth in complex product environments and collaboration with cross-functional teams. Trained at Coders Lab and holding a sociology master's, he combines technical frontend skills with an ability to understand user research and stakeholder needs. Active on GitHub, he maintains a professional footprint that signals continuous learning and practical open-source engagement. Mateusz is especially strong at turning design and QA insight into polished, maintainable front-end code.
10 years of coding experience
7 years of employment as a software developer
Front-End, Front-End at Coders LabMGR, Socjologia: Badania opinii publicznej polityki i rynku, MGR, Socjologia: Badania opinii publicznej polityki i rynku at Uniwersytet Kardynała Stefana Wyszyńskiego w Warszawie
English
Stackoverflow
71reputation
49kreached
7answers
0questions
Github Skills (17)
js-api10
trend9
api9
chat9
rest-api9
documentation8
livechat8
electron7
typescript7
automated-tests6
vbscript6
automation6
testing6
editor5
microsoft5
Programming languages (4)
Github contributions (5)
mpsujek/codewarssolutions
Aug 2019 - Jan 2023
Contributions:64 PRs, 113 pushes, 34 branches in 3 years 5 months
mpsujek/JavaScript30-master
Jun 2017 - Mar 2018
Contributions:28 commits, 26 pushes, 1 branch in 9 months
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