Nicolas Sebag is Co-Founder and CTO at COACH (COΛCH), a Y Combinator S26-backed AI platform designed to elevate in-person sales teams through intelligent, data-driven coaching.

Nicolas co-founded COACH alongside Thomas Perez and Mathieu Perez after being incubated at HEC Paris Incubateur, bringing a strong foundation in technology and entrepreneurship to the venture.

Nicolas is building at the intersection of AI and human performance, with a core conviction that in-person sales is one of the last truly human jobs and that any motivated rep can become a great one with the right coaching.

COACH was accepted into Y Combinator's Summer 2026 batch and previously graduated from the HEC Paris Winter 2026 Incubator cohort, validating its approach with top-tier accelerators on both sides of the Atlantic.

COACH has already demonstrated a 32% average lift in client conversion rates, enabling managers to coach 5x more reps by giving them full visibility into every field meeting.