Guillaume Roux-Romestaing, Angel Investor

Guillaume Roux-Romestaing is on the founding team at Wordware (YC S24), building Sauna.ai, an AI-powered workspace. He also scouts for Andreessen Horowitz and invests through 181 Angels, while mentoring founders via Techstars. Previously, he led partnerships at 11x.ai and has built multiple ventures across technology and growth. His background spans sales, partnerships, and early-stage venture building, with a focus on scaling AI-driven products and supporting founders through both capital and hands-on guidance. As an angel investor, Guillaume recently backed The New Era® of Shopping in its pre-seed round, reflecting his interest in startups innovating at the intersection of commerce and AI-powered infrastructure.