Yunlei Xu
Data Engineer @Voya Financial
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WORK HISTORY
Data Engineer @Voya Financial
Chicago, IL, US
Automated headcount analytics by migrating multi-step Excel/Power Query workflows into Microsoft Fabric (PySpark), producing month-over-month change classifications (Joiner, Leaver, Transfer, Reclass) across ~20K+ employees and improving HR/Finance reporting accuracy by eliminating 95% of manual reconciliation- Engineered 3 Fabric Lakehouse pipelines ingesting data from SharePoint Gen2 and other sources, creating 6 unified, clean output tables that cut data preparation time by 30% and enabled faster reporting across Travel & Entertainment (TE) and Headcount initiatives- Designed semantic models using DAX and developed Power BI dashboards for TE spend and revenue/expense alignment, supporting executive planning and quarterly forecasting decisions worth $10M+- Piloted AI automation with M365 Copilot Studio, designing Voya’s first virtual agent, enabling scalable workflow automation, fraud detection, and self-service knowledge retrieval for 300+ employees.
EDUCATION
University of Chicago
Master of Science - MS, Applied Data Science
University of Wisconsin-Stevens Point
Bachelor of Science in Business and Bachelor of Science in Liberal Science, Finance and Psychology
UMN Carlson School of Management
Bachelor of Science in Business - BSB, Management Information System
ABOUT YUNLEI XU
Our team at Delta Air Lines harnessed the power of data analytics to enhance aviation…
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