Marcin J
Senior Software Engineer at SmartRecruiters
Krakow, Lesser Poland Voivodeship
Summary
👤
Senior🎓
Top SchoolMarcin J is a Senior Software Engineer based in Krakow with 10 years of hands-on experience building backend systems, primarily in Java and increasingly in Node.js. A graduate of AGH University of Science and Technology, he progressed from internships at IBM and game development work in Unity/C# to senior engineering roles at SmartRecruiters. He has a strong foundation in collaborative development practices, Git workflows, and full lifecycle delivery across enterprise and product teams. Known as an "AI-assisted developer" on GitHub, he leverages tooling and automation to boost productivity and code quality. Beyond day-to-day engineering, Marcin brings practical experience in mobile and backend domains and a track record of growing technically within the same company from junior to senior levels. His background suggests a pragmatic problem-solver who pairs solid academic training with diverse industry exposure.
10 years of coding experience
6 years of employment as a software developer
AGH University
Polish, English, German
Github Skills (16)
cursor8
browserstack7
typescript7
frontend6
copilot6
saucelabs6
react6
javascript5
coding5
dev-server4
protractor4
test-runner4
web-development3
analytics3
eslint3
Programming languages (4)
Github contributions (5)
mkczarkowski/harvard-cs50
Mar 2017 - Sep 2017
Contributions:22 commits, 21 pushes, 1 branch in 6 months
mkczarkowski/front-end-projects
Nov 2016 - Mar 2018
Contributions:177 pushes, 2 branches in 1 year 4 months
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