Cheng Jie is a seasoned machine learning engineer with extensive experience in developing algorithms for recommendation systems, natural language processing, and intelligent task orchestration. Currently serving as a Machine Learning Engineer for GenAI at Meta, Cheng has previously held roles as a Senior Machine Learning Engineer at Pinterest, a Staff Data Scientist at Walmart Global Tech, and a Statistical Consultant at Columbia Institute for Social and Economic Research. Cheng's academic credentials include a PhD in Mathematics and Statistics from the University of Maryland, a Master's degree in Statistics from Columbia University, and a Bachelor's degree in Marketing Management from Xiamen University. Notable projects include the development of a human-centered reinforcement algorithm and advanced data analysis techniques assisting graduate students and researchers.