Leon Szeli is a Product Manager at Meta since April 2022, overseeing the expansion of AI size recommendation technology across a vast product catalog for e-commerce applications. Concurrently, Leon serves as an Angel Investor and Limited Partner with several investment firms, focusing on pre-seed investments in B2B software startups within the AI and e-commerce sectors. As the Founding CEO of Presize, a former VC-backed AI startup acquired by Meta, Leon led the company to significant growth in the market. Additionally, Leon has conducted research at prestigious institutions such as the University of Cambridge and Stanford University, contributing to knowledge in fields such as trust in AI and innovation in engineering. Extensive experience also includes founding roles in other technology startups and consulting positions in various industries. Leon holds multiple degrees, including a Master of Science in Consumer Affairs and an Honors Degree in Technology Management.