Piotr Cieślak
Full-stack Developer at Grupa Wirtualna Polska
Warsaw, Masovian Voivodeship, Poland
Summary
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SeniorPiotr Cieślak is a Warsaw-based full-stack developer with a decade of experience specializing in adtech front-end engineering and programmatic advertising. He has progressed from Traffic Manager and Senior AdOps roles into full-stack and frontend developer positions at Grupa Wirtualna Polska, blending deep commercial knowledge of header bidding, CMPs and yield optimization with hands-on web development. Piotr is comfortable translating complex monetization requirements into performant user-facing interfaces and scalable integrations between publishers and programmatic ecosystems. His background as a consultant for demand-agnostic adtech solutions gives him a pragmatic, metrics-driven approach to product decisions that balances revenue goals with user experience.
10 years of coding experience
3 years of employment as a software developer
Github Skills (7)
nodejs2
json-data2
openstreetmap1
maps1
gis1
geojson1
zwave1
Programming languages (4)
Github contributions (5)
bones-pc/gollum-ks-shop-frontend
Aug 2022 - Dec 2024
Contributions:140 pushes, 31 branches in 2 years 4 months
bones-pc/randomizer
Sep 2023 - Apr 2024
Contributions:38 pushes, 1 branch in 7 months
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