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Xinhao Wang is an accomplished Machine Learning Engineer with extensive experience in AI applications. Currently at Big Sur AI since January 2024, Xinhao leads machine learning projects and manages the full model lifecycle. Previously at Sunshine from January 2022 to July 2023, Xinhao developed an AI-powered contact management app, overseeing all aspects of model implementation. Xinhao's earlier tenure at ETS, spanning from November 2011 to January 2022, involved significant leadership roles as Managing Senior Research Scientist, focusing on the SpeechRater engine for assessing spoken English proficiency. Educational qualifications include a doctoral degree in Natural Language Processing from Peking University and a bachelor's degree in Computer Science from Jilin University.