Yunxiao Liu is a seasoned professional with extensive experience in machine learning, data science, and engineering management within tech and finance sectors. Currently serving as Senior Engineering Manager for the Ads Marketplace at Reddit, Inc., Yunxiao Liu leads teams focused on driving revenue growth through optimization strategies. Previously, as Head of Ads Marketplace at Twitter, Yunxiao Liu oversaw a diverse team to enhance Twitter Ads through innovations in auction design and pricing. Earlier roles include applied scientist at Uber and quantitative positions at Citadel LLC and Barclays Investment Bank. Yunxiao Liu holds a Ph.D. in Interdisciplinary Statistics and Operations Research and multiple advanced degrees in econometrics, quantitative economics, and mathematical statistics.