Guillaume Pousaz (Fintech / Payments Infrastructure) at Checkout.com — London, United Kingdom

Guillaume Pousaz founded Checkout.com in 2012 as a payments gateway for large enterprises and marketplaces, building processing infrastructure that rivals Stripe and Adyen. Checkout.com reached a $40 billion valuation in 2022, making it one of Europe's most valuable private tech companies. A Swiss national who lived in California, Hong Kong, and London, Pousaz is known for his low-profile, builder-focused approach and for bootstrapping Checkout.com to profitability before raising external capital.