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Zhengzheng Yu is a Data Specialist at China Unicom Americas since August 2018, with previous experience as a Data Analyst Intern at Team One Global and an Intern Financial Analyst at DBS Bank. Zhengzheng's expertise includes managing CRM databases, data migration, and creating SQL queries and Tableau reports. Notably, Zhengzheng developed Hadoop Hive queries at AXA, contributing to significant online sales increases and reduced cart abandonment rates. Academic credentials include a Master’s degree in Data Science from The George Washington University and a Bachelor's degree in Finance from Jilin University.