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William Cheung is a Senior Data Scientist at Goodway Group, specializing in the enhancement of media buying algorithms and the development of Marketing Mix Modeling tools. Previously, William served as a Data Scientist at Criteo, where responsibilities included building self-service reporting for online video advertising campaigns and managing backend data pipelines. Prior experience includes a role as a Graduate Research Assistant at Fordham University, focusing on biometrics-based user authentication and machine learning for location prediction. William's career began as a Financial Analyst at National Grid, automating accounting processes, and an intern at Mercer, enhancing pricing tools. William holds a Master of Science in Data Science from Fordham University and a Bachelor of Applied Science in Applied Mathematics and Economics from Stony Brook University.