Karol Ciesluk
Senior Full Stack Software Engineer at Knowde
Białystok, Podlaskie Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolKarol Ciesluk is a Senior Full Stack Software Engineer based in Białystok, Poland, with five years of hands-on experience building maintainable web applications using Next.js and Ruby on Rails. He thrives across the product lifecycle, bridging frontend UX and backend logic to deliver polished, production-ready features. Currently at Knowde after progressing from frontend roles, he brings practical experience shipping real-world commercial apps and optimizing developer workflows. His background as a professional double bassist at the Norwegian National Opera & Ballet reveals strong discipline and collaborative instincts that he applies to engineering teams. Trained through intensive React and Next.js programs, he combines modern frontend techniques (hooks, SSR, state management) with pragmatic backend design. Karol is drawn to clear architecture and developer-friendly code, favoring solutions that balance user experience with long-term maintainability.
5 years of coding experience
Master of Arts - MA performance, Master of Arts - MA performance at Norwegian Academy of Music
English, bokmål, norweski, German, Polish
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (1)
react1
Programming languages (2)
Github contributions (5)
KarolCiesluk/wiki-browser
Nov 2021 - Dec 2021
Contributions:74 pushes, 5 branches in 22 days
KarolCiesluk/book-shelf-react
Sep 2021 - Sep 2021
Contributions:2 PRs, 65 pushes, 4 branches in 16 days
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