Data QA Tester / Data Warehouse Tester

Jit Team is a Polish IT company employing over 770 experienced experts, working on innovative IT solutions and supporting educational and charitable activities. The client is a leading financial group in the Nordic countries with a global presence, known for its Scandinavian culture emphasizing work-life balance and feedback culture. The client has over 200 personnel from Jit Team working on more than 60 projects.

• Proven experience in Data Warehouse Testing
• Hands-on experience with Snowflake
• Strong knowledge of SQL and data validation techniques
• Experience testing ETL/Data Integration processes
• Experience working with AWS
• Knowledge of dbt (Data Build Tool) and testing data transformations
• Ability to analyze large datasets and identify data quality issues
• Experience working in Agile environments
• Familiarity with Jira and test management tools

Nice to have:

• Experience with Python
• Experience with JavaScript and TypeScript
• Knowledge of Playwright

• Validate complex data pipelines and ETL processes
• Perform end-to-end testing of data warehouse solutions
• Verify data quality, consistency, completeness, and accuracy
• Create and execute SQL-based test scenarios
• Review and validate data transformations implemented in dbt
• Support automation of data validation processes
• Collaborate closely with developers, data engineers, and business stakeholders
• Identify, document, and track defects
• Contribute to continuous improvement of testing processes