Founder · Engineer · Executive
Varun Mathur
Varun Mathur is the co-founder and CEO of Unisson, a Y Combinator Winter 2026 startup building AI agents that act as hands-on product experts for customer-facing B2B teams. Before Unisson he led product, engineering, growth and vision-language-model research for agent products at Ambient.ai (YC W17), where he built a video-understanding model that outperformed Gemini 2.5 Pro and sold AI to Fortune 5 companies. He studied computer science and statistics at the University of Illinois Urbana-Champaign and works out of San Francisco.