William El Sayed is a professional with extensive experience in public policy and economic research, currently serving as a Founder’s Associate at Mistral AI since July 2023, focusing on the development of Large Language Models. Prior to this role, William completed a significant internship at the Ministère de l’Économie, where strategic planning for Artificial Intelligence was developed under Minister Jean-Noël Barrot. William's background includes positions in various governmental departments and organizations, such as intern roles in economic research at S&P Global and cabinet work in the Services du Premier ministre and the Ministère des solidarités et de la santé. William holds multiple master's degrees in Public Policy and Economics from prestigious institutions, alongside a bachelor's degree in Econometrics and Quantitative Economics and an economics bachelor's from the University of Paris I.