Piotr Zientara
CTO at ValiCor US™
Warsaw, Masovian Voivodeship, Poland
Summary
👤
Senior🎓
Top SchoolPiotr Zientara is a tech entrepreneur and CEO of Xfaang with 11 years of experience building web and mobile products that make cultural goods more accessible. He combines hands-on full-stack development with leadership, having served as CTO and led engineering teams before founding and scaling Xfaang. A co-founder and long-time organizer of WarsawJS and ConFrontJS, Piotr cultivates one of Poland’s largest JavaScript communities and helps developers grow through events and education. His background in philosophy and teaching informs a reflective approach to product and team design, and he also co-owns K MAG magazine, bridging tech, culture, and publishing.
11 years of coding experience
6 years of employment as a software developer
Doctor of Philosophy - PhD Education, Doctor of Philosophy - PhD Education at University of WarsawRuby on Rails Developer, Ruby on Rails Developer at Coders Lab
English, German, French, Chinese
Github Skills (67)
ai10
query-language10
dotnet9
api9
code-generation9
rest-api9
hosts9
csharp-code9
graphql9
csharp9
nodejs9
javascript8
amplication8
programming-language8
nestjs8
Programming languages (11)
Github contributions (5)
Tuhaj/tuhaj.github.io
May 2019 - Mar 2025
Contributions:12 pushes, 1 branch in 5 years 10 months
warsawjs/meetup-support-slides
Oct 2017 - Feb 2023
📋 Slides supporting hosts during meetup
Contributions:94 commits, 1 PR, 101 pushes in 5 years 4 months
hostssupporting
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