Marc Kaa Brejner is Co-Founder and CTO at Complir, a Copenhagen-based AI platform automating product compliance for global retailers, and a proud member of Y Combinator's Spring 2026 batch.

Marc graduated as an Engineer from the Technical University of Denmark and built his expertise as a consultant designing large-scale system architecture for Danish public authorities.

Investors and peers at Vendep Capital and XPRESS Ventures have praised Marc and his co-founders for their technical excellence and high-velocity founder energy while navigating complex enterprise environments.

Complir raised a EUR 1.7M pre-seed round led by Vendep Capital, with participation from Plug and Play, Likeminded, F-LOG Ventures, and notable industry angels including former Coop Group CEO Kraen Ostergaard Nielsen.

Complir achieved 45% month-over-month growth and serves leading Scandinavian retailers including Flying Tiger Copenhagen across textiles, toys, cosmetics, electronics, and home goods.