Pavol Hejny
CTO & Founder at Promptbook
Prague, Prague, Czechia
Summary
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SeniorPavol Hejny is a founder-CTO and AI-focused engineer with nine years of experience building products that scale human expertise into software. As co-founder of Promptbook he leads development of the Book programming language and AI agents that capture senior decision patterns, enabling companies to multiply expert capacity without vendor lock-in. He has hands-on experience applying AI in public institutions and startups—from implementing internal AI at the Národní pedagogický institut to co-founding CollBoard and pivoting WebGPT into Promptbook. A full‑stack builder comfortable across product, community, and systems, he combines practical engineering with a fascination for responsible, transparent LLM-driven applications. Based in Prague, he thinks in code, prefers working in nature, and is driven by the idea that technology should amplify human judgment rather than replace it. An interesting, less obvious detail: alongside product work he stages technical talks and community roles, blending public speaking with deep engineering to accelerate adoption.
9 years of coding experience
4 years of employment as a software developer
English, Slovenian, Czech
Stackoverflow
45reputation
5kreached
1answer
5questions
Github Skills (147)
padding10
geojson10
geography10
async-await10
mouse-events10
openstreetmap10
indentation10
sdk10
war10
autogpt10
touchscreen10
cli10
child-process10
cooperation10
template-engine10
Programming languages (10)
Github contributions (5)
hejny/todotable
Mar 2017 - Jun 2019
Contributions:82 commits, 64 pushes, 2 branches in 2 years 3 months
hejny/snake-game
Jun 2017 - Jan 2021
Contributions:53 pushes, 2 branches in 3 years 6 months
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