Data QA Engineer

2 days ago

India Cochin Kochi Ernakulam Litmus7 Full time

Job Description - 5+ years of experience in Quality Assurance with at least 3+ years in Data QA. - Design, develop, and execute manual and automated test cases for data ingestion, transformation, and consumption layers. - Validate data completeness, consistency, and accuracy across diverse source and target systems. - Write advanced SQL queries and supporting scripts to perform data profiling, reconciliation, anomaly detection, and regression checks. - Review data pipeline designs with data engineers to define test strategy, coverage, and potential failure points. - Build and maintain automated data quality checks within dbt (schema tests, custom tests, documentation validation). - Partner with engineering teams to triage data defects, drive root-cause analyses, and track remediation to closure. - Contribute to improving data QA frameworks, processes, and CI/CD integration for continuous testing. - Support testing across AWS components such as Redshift, Glue, EMR, S3, Lambda, and related platform services. - Required Skills & Experience - Strong proficiency in SQL with the ability to write complex joins, aggregations, and validation queries. - Hands-on experience in testing ETL/ELT pipelines and a solid understanding of data warehousing concepts. - Practical experience with dbt (tests, models, lineage, CI workflows). - Experience in scripting languages such as Python or Bash for test automation and data validation tasks. - Familiarity with AWS data ecosystem (Redshift, Glue, EMR, S3, Athena, Lambda).

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