Ji Chen is an Applied Scientist at Amazon, where they have been since 2021. Prior to this role, Ji was a Research Intern at Baidu USA in 2020 and a Data Scientist Intern at Intuit in 2019. They earned a Bachelor's degree in Mathematics from Shanghai Jiao Tong University and a Doctor of Philosophy in Applied Mathematics from the University of California, Davis. Ji's work focuses on enhancing machine learning models for improved customer service and personalization.