Mateusz Sienkan
Frontend Developer at TJ.Software
Białystok, Podlaskie Voivodeship, Poland
Summary
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RockstarMateusz Sienkan is a Frontend Developer with 11 years of experience based in Białystok, Poland, who has been contributing to client-facing web products at TJ.Software and Pagepro since 2015. He focuses on building responsive, polished user interfaces and bringing long-term front-end maintainability to projects. Working concurrently at two companies suggests strong multitasking and the ability to balance multiple product priorities. His steady tenure indicates deep practical knowledge of front-end toolchains and real-world delivery cycles. While not an outspoken open-source presence, his career longevity implies reliable, production-focused craftsmanship and incremental improvements to user experience.
11 years of coding experience
Stackoverflow
36reputation
774reached
1answer
0questions
Github Skills (69)
bioconductor10
electricity10
react-router10
cooperation10
consumption10
sustainability10
redux10
game-theory10
climate-change10
theory9
javascript9
git-history9
react-native9
react9
cran9
Programming languages (9)
Github contributions (5)
sin/inspotify
Aug 2015 - Mar 2017
Contributions:9 commits, 8 pushes in 1 year 7 months
sin/trust
Aug 2017 - May 2020
Contributions:3 PRs, 68 pushes, 2 comments in 2 years 9 months
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