Guillaume Saint-Jacques

Guillaume Saint-Jacques is a seasoned data science leader with extensive experience across prominent technology companies. Currently serving as the Director of Creator & Engine Data Science at Roblox since May 2025, Guillaume empowers creators and users through data-driven initiatives. Prior to this role, Guillaume was a Senior Engineering Manager at Apple, leading a global AIOps/AI Delivery organization, as well as a Senior Data Science Manager at Siri, where the focus was on A/B testing analytics and the integration of machine learning and data science tools. Guillaume's earlier tenure at LinkedIn included leading the Computational Social Science team, emphasizing measurement around social capital and inequality in algorithms. Guillaume began a Ph.D. at MIT Sloan School of Management, concentrating on social networks and the economic impact of AI algorithms, and holds a Master's degree in Economics from Ecole normale supérieure.