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ETL Tester
  • Warsaw
ETL Tester
Warszawa, Warsaw, Masovian Voivodeship, Polska
COGNIZANT
5. 9. 2025
Informacje o stanowisku

technologies-expected :


  • Snowflake Data Cloud
  • SQL
  • Python

about-project :


  • 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.

responsibilities :


  • 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

requirements-expected :


  • SQL & Querying -Strong SQL for complex source-to-target validations
  • ETL Tools -Experience with Informatica, IDMC
  • Data Modeling -Understanding of dimensional modeling (Star/Snowflake schemas)
  • Scripting -Python, Shell, or PowerShell for automation
  • Data Profiling -Knowledge of tools for quality checks and profiling
  • Integration & Governance - Understanding of business rules and compliance standards
  • Test Tools -Experience with JIRA, HP ALM, TestRail, Zephyr
  • Comparison Automation -Familiarity with QuerySurge, Datagaps
  • Cloud Knowledge -Basic understanding of Azure data services
  • Performance Testing -Validating ETL performance under high-volume scenarios
  • CI/CD Integration -Experience integrating tests in automated deployment workflows

offered :


  • Extensive benefits package: Multisport Card, LuxMed medical healthcare including dental care, life insurance, cafeteria benefits
  • Open-minded and multinational environment
  • Opportunity to be part of a global organization focused on development
  • Professional development and clear career path
  • Training & development opportunities including language courses

benefits :


  • sharing the costs of sports activities
  • private medical care
  • life insurance
  • cafeteria benefits

  • Praca Warszawa
  • Tester Warszawa
  • Warszawa - Oferty pracy w okolicznych lokalizacjach


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