Viren Amarshi Rathod

Data Analyst @UnitedHealth Group

US

Designed and maintained scalable data pipelines processing 30K+ daily financial records with 99.9% accuracy across credit card, loan, and investment portfolio systems, implementing comprehensive data validation checks• Developed fault-tolerant data ingestion architectures using Apache Kafka and AWS Kinesis to handle high-throughput financial data streams with retry mechanisms and dead letter queues• Optimized ETL workflows using Apache Spark and SQL Server Integration Services (SSIS), reducing daily analytics report processing time from 6 hours to 3.5 hours through parallel processing techniques• Managed multi-cluster AWS S3 data lake environments supporting different business units, implementing data partitioning strategies and lifecycle policies for regulatory compliance• Refactored complex SQL queries and implemented indexing strategies in PostgreSQL databases, reducing average query execution time from 45 seconds to 27 seconds for customer analytics reports• Integrated machine learning models built with TensorFlow and Scikit-Learn into existing data pipelines to automate sales forecasting, improving accuracy by 30% and contributing to $200K+ quarterly revenue increase.• Collaborated with data science teams to productionize predictive models, implementing MLOps practices using Docker containers and Jenkins CI/CD pipelines.