Design and execute test plans for ETL processes ensuring data accuracy completeness and automated test scripts using Python or R for data validation and source-to-target data verification transformation logic testing and regression with data engineers and analysts to understand business requirements and data data anomalies and work with development teams to resolve test documentation including test cases test results and defect in performance testing and optimization of data pipelines. Required Skills & Qualifications:Strong experience in ETL testing across various data sources and in Python or R for scripting and understanding of SQL and relational with data warehousing concepts and tools (e.g. Power BI QlikView Informatica Talend SSIS).Experience with test management tools (e.g. JIRA TestRail).Knowledge of data profiling data quality frameworks and validation analytical and communication skills.