Kai Ding is a Senior Data Scientist at SoFi, where responsibilities include building default, prepayment, loss, and CECL models for personal loans, student loans, and credit cards, as well as predicting loss rates using credit bureau attributes and training models using PySpark since May 2022. Prior to this role, Kai served as a Data Scientist at California State University - East Bay from September 2017 to May 2022, focusing on quantitative research in Macroeconomics, and held positions as a Graduate Student Instructor at the University of Minnesota from September 2012 to June 2017 and a Research Analyst at the Federal Reserve Bank of Minneapolis from September 2013 to May 2016. Educational qualifications include a PhD in Economics from the University of Minnesota, as well as studies in Economics, Finance, and Mathematics from institutions including the University of California, Davis and the University of Hong Kong.