Sai Charan
Lead Microsoft Dynamics 365 | Customer Insights (CI/CDP) | Power Platform | CRM Solutions Architect | Azure | M365 Technical
- Role
- Senior Data Engineer at UnitedHealth Group
- Location
- Atlanta, GA, US
- LinkedIn followers
- 500 followers
About Sai Charan
Senior Data Engineer with 6+ years of experience designing, building, and supporting…
Experience
Senior Data Engineer
Jan 2024 — Present · US
Designed and supported enterprise healthcare batch pipelines processing 10–15 million records monthly using Python, SQL, AWS S3, and RDS.Built end-to-end ETL workflows with incremental loading, schema validation, and source-to-target mappings, improving data consistency by 25%.Developed optimized analytical data models and complex SQL views supporting 15+ Power BI dashboards across finance, operations, and compliance teams.Implemented data quality and reconciliation frameworks including row counts, financial totals, and anomaly detection, reducing UAT defects by 30%.Optimized SQL queries and Python transformations on multi-million-row datasets, reducing batch runtime by 20–30%.Established pipeline monitoring and alerting using AWS CloudWatch, improving incident resolution time by 20%.Prepared feature-ready datasets for machine learning initiatives using Pandas, normalization techniques, and historical backfills.Partnered with QA and business stakeholders during UAT to validate metrics and ensure production accuracy.Authored technical documentation covering ETL logic, lineage, business rules, and audit readiness.
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