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Piotr Zientara: Warsaw entrepreneur and engineer who bridges the tech community and business: CEO of the software house Xfaang

Appeared at Warsaw Glitch 2026 in 3 programme slots: “HOW TO NOT INVEST IN POLAND?” (Friday, Aug 28, 14:00, MAIN STAGE), “StartUp Battle - Live Showcase - 7 minutes to sell your idea” (Friday, Aug 28, 17:00, MAIN STAGE), “Content that cannot be delivered by AI: an interview” (Saturday, Aug 29, 13:20, WARSAWJS).

Warsaw Glitch newsroom1 min read

Who

Piotr Zientara

Founder · CEO · Poland

Warsaw entrepreneur and engineer who bridges the tech community and business: CEO of the software house Xfaang, co-founder of AskQL Technologies, co-owner of the K MAG magazine and an investor in Stimy AI. As a co-founder of the WarsawJS Foundation he has led Warsaw's JavaScript community of over 6,500 members for a decade, organized five editions of the ConfrontJS conference and founded Edukaton, a hackathon built around training new developers. A philosophy graduate of the University of Warsaw, he mentors at Rails Girls and WarsawJS and teaches mathematics and programming on YouTube.

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