SQL: MySQL, PostgreSQL, Snowflake | ETL: dbt, Airflow Advanced: Window Functions, CTEs, Star Schema Deployment: Docker, GitHub Actions | BI: Tableau, Power BI
- β‘ 85% query speed improvement (45s β 6s on 1M rows)
- π RFM Churn Model β Identified 12% revenue at-risk
- π 15+ production pipelines β E-commerce, Finance sectors
"Star Schema + Window Functions + Proper Indexes = 95% Problems Solved"