Guillaume Dumortier

I'm Guillaume — a Fractional CMO, growth strategist, and builder of AI-powered marketing tools for founders and small teams. With 20+ years of experience across Tech, Telco, Retail, and CPG, I've guided global brands like L'Oréal, Red Bull, Chanel, and Danone, as well as high-growth startups like Life360 and Algolia, and celebrity ventures including Brad Pitt's.