ETL Testing

3 hours ago


Chennai India Cognizant Full time

Job Description AIA Face to Face Interview Chennai Skill: ETL Testing Experience - 4 To 9 Years Location: Chennai Drive: 06 Dec 2025 Key Responsibilities - Design and execution: Develop and execute test plans, test cases, and scripts to validate the entire ETL process, from data extraction to transformation to loading. - Data validation: Verify the accuracy, completeness, and integrity of data by comparing source and target data, often using SQL queries and ETL tools. - Defect management: Identify, document, and report defects and issues found during testing, and work with development teams to resolve them. - Collaboration: Work closely with ETL developers, data analysts, and business stakeholders to understand requirements and ensure the final data meets business needs. - Documentation: Maintain test cases, test scripts, and detailed documentation for testing procedures and results. - Automation: Develop and maintain automated test suites to improve efficiency, especially for regression testing. - Performance testing: Validate the performance and reliability of ETL operations to ensure they can handle the required data volumes. Required Skills And Qualifications - Technical skills: Strong proficiency in SQL is essential for data validation. Knowledge of data warehousing concepts (like dimensional modeling) and various ETL tools (such as Informatica, Talend, or SSIS) is also required. - Analytical skills: Ability to analyze complex data sets and identify inconsistencies or discrepancies. - Communication skills: Effectively communicate test findings and potential solutions to both technical and non-technical audiences. - Problem-solving: Ability to troubleshoot and find the root cause of data quality issues. Education: A bachelor's degree in computer science, information technology, or a related field is often preferred


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