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Y Sai K is an experienced ETL Developer currently employed at Cigna Healthcare since July 2019, focusing on loading data from S3 buckets to Teradata Vantage using Apache Airflow and Pyspark, as well as database design and maintenance for data warehouse projects. Previous roles include developing ETL mappings with Informatica Power Center, serving as a Student Data Analyst at the University of Missouri-Kansas City, and interning as a Data Engineer at Georgia-Pacific LLC, where expertise in Python for data automation was applied. Early experience includes roles as a Junior ETL Developer and Electrical Engineering Intern, complemented by academic credentials with a Master’s degree in Computer Science from the University of Missouri-Kansas City and a Bachelor's degree from Jawaharlal Nehru Technological University.