Sebastian Widelak
Starszy Programista at Power PC
Subcarpathian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolSebastian Widelak is a Polish full-stack developer and technology leader with about 13–14 years of industry experience, currently serving as a senior developer at SmartMedia Technologies while running his own company, Power PC. He has progressed from hands-on engineering roles in ad-tech and finance to team leadership positions, including Team Leader at ERLI.pl and IT Team Lead at OPGK Software, which gives him strong delivery and people-management credentials. Sebastian blends practical full-stack skills with entrepreneurial instincts cultivated since 2009, frequently operating at the intersection of product requirements and scalable implementation. His background in programmatic advertising at Justpremium and long-term freelance/owner experience suggests an ability to ship production-grade systems under commercial constraints. Based in the Subcarpathian region, he pairs formal systems engineering education from Politechnika Rzeszowska with a pragmatic, outcomes-focused approach to software delivery. Notably, he has maintained continuous professional activity across startups, agencies, and his own business, indicating resilience and adaptability in changing tech landscapes.
13 years of coding experience
Liceum Ogolnoksztalcace w KolbuszowejInżynier Inżynieria systemów informatycznych, Inżynier Inżynieria systemów informatycznych at Politechnika Rzeszowska im. Ignacego Łukasiewicza
English
Github Skills (54)
advertising10
javascript9
prebid9
browser9
react9
nextjs8
flowbite8
validation8
header-bidding8
ext-direct8
react-hooks7
forms7
typescript7
tailwindcss7
compiler7
Programming languages (7)
Github contributions (5)
mkalafior/redis-client
May 2015 - Jun 2018
Lightweight Redis client with cluster support.
Contributions:1 PR, 24 pushes, 1 branch in 3 years 1 month
redisredis-clientredis-clustercluster-supportcluster
mkalafior/Prebid.js
May 2017 - Jul 2018
Contributions:7 PRs, 23 pushes, 15 branches in 1 year 1 month
headerprebidjavascriptconfusingbidding
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