Zack Leman

Zack Leman is the Co-Founder and Chief Technology Officer of Jarmin.ai, an artificial intelligence startup based in San Francisco, California. Founded in 2025 alongside Chalmers Brown and Shirsendu Halder, the Y Combinator-backed company provides automated machine learning engineering services. Prior to launching Jarmin, Leman served as a Staff Engineer at Meta Superintelligence Labs and worked as a Software Engineer at Amazon Web Services. His earlier startup experience includes acting as the Chief Technology Officer and co-founder of (catch) health, as well as being the third employee and founding software engineer at healthcare communications platform Artera. He holds degrees in Neuroscience and Computer Science from Bowdoin College and completed the Business Bridge Program at Dartmouth's Tuck School of Business. Leman's career centers on advancing artificial intelligence, machine learning infrastructure, and healthcare technology across both early-stage ventures and established enterprise organizations.