Founder · Scientist · Executive
Zlatko Jončev
Zlatko Jončev is the co-founder and CEO of b-12 (b12 Labs), a Y Combinator S25 startup building AI agents that plan and run chemical synthesis for pharma and biotech. A former national chemistry olympiad champion turned organic chemist, he earned a PhD in Basel, trained as a medicinal chemist at Roche, and did his postdoc in EPFL's Lab of Artificial Chemical Intelligence, where he met co-founder Andres Bran. b-12 aims to shrink early-stage drug discovery from years to months by making molecules that are otherwise hard to make.