ETL QA Test Engineer | Contract | Hybrid, Rosemont, IL

The Opportunity: You'll play a critical role in ensuring data integrity across a complex ecosystem that includes Master Data Management (MDM), Data Warehouse environments, legacy platforms, and online database systems. This is a hands-on position for someone who takes ownership of quality from strategy through execution.

What You'll Be Doing: Leading ETL process and data testing across MDM, Data Warehouse, and legacy platforms Writing and executing complex SQL queries for results validation, data mining, and foreign key dependency analysis Developing and executing Test Strategy, Test Design, and Test Execution plans Performing Root Cause Analysis (RCA) and producing heatmaps and reporting Collaborating cross-functionally with development and business teams to identify and resolve issues Working within both Agile and Waterfall methodologies What You Bring 10+ years of hands-on ETL testing experience- this is non-negotiable 10+ years of Quality Assurance experience in enterprise environments 5+ years of Data Warehousing experience, including dimensional databases Intermediate to advanced SQL skills with a strong focus on complex queries Proven experience with RCA, test lifecycle management, and QA best practices Strong analytical skills with exceptional attention to detail Excellent communication and client-facing interpersonal skills Nice to Have Scripting experience in Python, C#, Java Script, or Power Shell Hands-on experience with Kodda or SSIS packages

Requirements: Must be local to the Chicago area Must be authorized to work in the US; USC, Green Card, or EAD only 1099 or Corp-to-Corp engagement