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Yujing Lai is a seasoned financial engineer with extensive experience in data analysis and software development across multiple companies in the financial sector. Currently employed at Freddie Mac since January 2020, Yujing specializes in big data technologies, including PySpark and AWS, focusing on mortgage data. Prior experience includes a role as a data engineer at Fannie Mae from January 2018 to December 2019, utilizing Python and SAS for similar data applications. Yujing's career began as a data analyst at Capital One, where skills in Teradata and AWS were applied to credit card and auto loan data. Earlier roles include software development at SMART Technologies and the IT University of Copenhagen, with a focus on creating applications for various platforms and assistive technology for disabled individuals. Yujing holds a Master’s degree in Multimedia Technologies from IT-Universitetet i København and a Bachelor’s degree in Computer Science from China University of Geosciences.