Perform end-to-end testing of ETL processes and data flows, including data validation, transformation, and reconciliation between source and target systems.
Write and execute complex SQL queries to verify large volumes of data across various systems.
Develop test plans, test cases, test scripts, and test data based on business and functional requirements.
Execute various types of testing, including functional, regression, system integration, and data integrity testing.
Identify, document, and track defects; work closely with development and data teams for resolution.
Collaborate with ETL developers, business analysts, and other stakeholders to understand requirements and clarify data flows.
Contribute to the automation of data testing processes where applicable.
Provide detailed test status updates and participate in defect triage meetings.
Required Skills & Qualifications :
3 to 9 years of hands-on experience in ETL / Data Warehouse testing.
Strong experience in data validation, transformation, and reconciliation.
Proficient in writing and executing complex SQL queries for large data sets.
Working knowledge of at least one ETL tool such as : Informatica, IBM DataStage, Talend, or similar.
Experience in functional, regression, and system integration testing within a data environment.
Exposure to reporting and visualization tools (e.g., Tableau, Power BI, Cognos) is a plus.
Understanding of data warehousing concepts, star / snowflake schemas, and data modeling.
Strong analytical thinking, attention to detail, and problem-solving skills.
Excellent verbal and written communication skills to interact with cross-functional teams.
Nice to Have :
Experience with cloud data platforms (e.g., AWS Redshift, Azure Synapse, Google BigQuery).
Familiarity with test automation frameworks for data / ETL pipelines.
Knowledge of Agile / Scrum methodologies and tools like JIRA or TestRail.
ISTQB or equivalent QA certification.
(ref : hirist.tech)
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Automation Testing • Bangalore
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