Krzysztof Rusnarczyk
Owner at Underovsky
Tarnów, Lesser Poland Voivodeship
Summary
👤
Senior🎓
Top SchoolKrzysztof Rusnarczyk is an experienced software engineer and founder with over a decade of delivering end-to-end solutions—from simple websites to SaaS, banking, e-commerce and PWAs—while blending roles as architect, developer, researcher and designer. As owner of Underovsky and a former technical lead and VP of R&D, he combines hands-on engineering with team leadership, having managed small teams and cultivated leaders through transparency and ownership. He prefers seeking the simplest robust solutions to hard problems and shifts organisations toward objective- and measurement-driven product decisions that prioritize customer value and business viability. Grounded in a Master’s in Computer Graphics from AGH University, he brings a rare cross-disciplinary perspective that tightens product lifecycle detail and UX. Outside work he recharges in a village surrounded by forests, where his curiosity fuels woodworking, mycology and continual skill growth—an owner who codes and a leader who still enjoys getting his hands dirty.
10 years of coding experience
10 years of employment as a software developer
Master of Engineering (M.Eng.), Computer Science (Computer Graphics), Master of Engineering (M.Eng.), Computer Science (Computer Graphics) at AGH University of Krakow
English, Polish
Github Skills (21)
jquery-plugin10
jquery10
tag-input10
browser9
react9
nextjs8
javascript8
tag-list7
typescript7
compiler7
hybrid6
static-site-generator6
firefox-webextension4
ssg4
vercel4
Programming languages (2)
Github contributions (5)
underovsky/instant-presentation
Oct 2015 - Feb 2017
Contributions:13 commits, 12 pushes, 1 branch in 1 year 3 months
underovsky/jquery-tagsinput-revisited
Jan 2017 - Oct 2019
Revisited version of popular jQuery Tags Input Plugin
Contributions:2 releases, 34 commits, 3 PRs in 2 years 9 months
jqueryjavascripttags-inputjquery-plugintag-input
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