Location: Poland (Permanent Employment), work model: hybrid.

About the Role
As an ETL (Extract, Transform, Load) Tester, youll be instrumental in ensuring accurate, reliable, and high-performing data pipelines across systems. Your work will help maintain data integrity, ensure high-quality analytics, and empower data-driven decision-making.

• Develop and execute ETL test cases and strategies
• Perform source-to-target data validation for completeness and accuracy
• Validate transformation logic and verify business rule mapping
• Conduct data quality checks and anomaly detection
• Automate ETL testing using scripting languages
• Collaborate with cross-functional teams (data engineers, developers, analysts)
• Log and manage defects using tools such as JIRA, HP ALM, or TestRail
• Document test plans, results, and audit artifacts
• Participate in performance and volume testing
• Ensure data governance and compliance (GDPR, HIPAA)
• Support CI/CD workflows by integrating ETL tests into pipelines

• Strong experience in DW testing projects.
• Testing experience with Informatica Power Center or IDMC.
• ETL Data Testing experience with SQL.
• Teradata Database SQL knowledge
• Experience with test automation tools and scripting (Python, Shell).
• Knowledge of data governance, metadata, and lineage concepts.
• Understanding of cloud platforms (Azure preferred).
• Familiarity with CI/CD tools (Git, Jenkins) for test automation integration.

• Testing experience with Snowflake.
• Experience in automation testing, scripting.
• Certifications in Informatica IDMC or related data testing tools.
• Experience with performance testing of data pipelines.
• Exposure to big data platforms and cloud-native testing frameworks.