I will write, fix queries for etl testing and data validation

Are you looking for a reliable and detail-oriented Data/ETL Testing expert who can ensure your data pipelines are accurate, efficient, and production-ready? You're in the right place!

I specialize in End-to-End Data Testing and Validation, helping organizations deliver high-quality data by leveraging strong expertise in ETL processes, Advanced SQL, and Azure data platforms.

What I Offer

ETL Testing & Data Validation

• Validate data across complex ETL pipelines
• Ensure data accuracy, completeness, and consistency
• Perform batch and incremental load validations

Advanced SQL & Data Analysis

• Expert in writing complex SQL queries
• Hands-on with joins (inner, outer, cross), aggregations, and performance tuning
• Deep data analysis for validation and troubleshooting

Data Reconciliation & Source-to-Target Mapping (STM)

• Perform detailed data reconciliation between source and target systems
• Validate transformations as per business rules
• Ensure accurate mapping and data lineage

Azure Data Engineering Stack

• Azure Synapse Analytics
• Azure Data Factory (ADF) pipelines testing
• Data flow validation and monitoring

Automation Approach (where applicable)

• Design scalable test strategies
• Implement automation