Chandra J
Data Analyst | 6 Years in Healthcare, E-commerce, and Financial Services | Skilled in SQL, Python, Machine Learning, and Data Visualization | Driving Business Growth Through Advanced Analytics and Actionable Insights
- Role
- Data Engineer at UnitedHealth Group
- Location
- Lowell, MA, US
- LinkedIn followers
- 500 followers
About Chandra J
6 years of experience as a Data Analyst with a proven track record of success in…
Experience
Data Engineer
Feb 2025 — Present · Boston, MA, US
Built and supported AWS-based ETL pipelines using PySpark on Databricks and Amazon S3 to process healthcare claims and eligibility data for analytics and reporting needs.• Developed batch data workflows using AWS Glue and Apache Airflow, implementing scheduling, retries, and error handling to support reliable data delivery.• Designed reusable Airflow DAGs with SLA monitoring and alerting to improve stability across business-critical healthcare data pipelines.• Implemented data transformations using Delta Lake tables on Databricks, supporting schema changes and optimized query performance for downstream analytics teams.• Ingested and standardized healthcare data from on-prem databases and flat files into Amazon S3 and Amazon Redshift using incremental load strategies.• Optimized PySpark jobs by tuning partitions, joins, and caching to improve performance on large-volume healthcare datasets.• Developed and optimized SQL queries and Redshift views to enable efficient reporting and analytical access for healthcare stakeholders.• Implemented data quality checks and validation logic within ETL pipelines to ensure accuracy, completeness, and consistency of healthcare data.• Configured monitoring and alerting using Amazon CloudWatch to detect pipeline failures and performance issues, reducing operational disruptions.• Collaborated with analysts, QA, and downstream consumers in Agile sprints to deliver enhancements, resolve production issues, and support reporting requirements.
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