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Test Data Engineer / Test Data Specialist

Jit Team • Warszawa, Pomeranian Voivodeship, Poland

hybridfull-time

Salary: PLN 100 - PLN 130 / hour

Posted Sep 18, 2026Apply by Oct 18, 2026
  • Role & seniority

    • Test Data Engineer, Senior (8+ years)
  • Stack/tools

    • SQL, relational databases

    • Python, PowerShell, Java (scripting)

    • CI/CD pipelines, DevOps tooling

    • Synthetic data generation tools

    • Test automation frameworks

    • Mainframe technologies

    • (Also: test data masking/anonymization; data extraction/transform; cloning/subsetting)

  • Top 3 responsibilities

    • Design/build/maintain reusable test data assets and provisioning solutions

    • Implement data masking/anonymization and synthetic dataset generation for scenarios/edge cases

    • Provision/refresh/clone datasets across non-prod environments; integrate with CI/CD-driven automated regression testing

  • Must-have skills

    • Strong SQL + relational DB knowledge

    • Hands-on experience in test data management concepts/activities (generation, cloning, subsetting, extraction/transformation)

    • Experience with test data masking/anonymization and GDPR/data governance compliance

    • Scripting ability in Python/PowerShell/Java (or similar)

    • Understanding of CI/CD and DevOps practices

    • Experience supporting automated/integration/end-to-end testing

    • Agile delivery experience; English B2+

  • Nice-to-haves

    • Mainframe experience (explicitly expected; otherwise considered a plus)

    • Experience with “self-service” mechanisms for on-demand test data access

    • Strong monitoring/troubleshooting

Full Description

Salary: 100-130 PLN/H on B2B

Work model: hybrid from Gdynia / Gdańsk / Warszawa (2/3 days per week from the office)

Why choose this offer? You can expect a flexible work organization The international work environment will give you the opportunity to interact with the English language on a daily basis Scandinavian organizational culture will provide you with work-life balance, you will gain time for additional training (financed by Jit) The Jit community will bring you a nice time during regular integration meetings

Project Join the Home Journey initiative, a large-scale transformation program focused on improving the end-to-end customer experience of buying a home across the Nordic countries. You will become part of an international and highly collaborative Agile environment, working closely with testers, developers, DevOps engineers and business analysts. The team's mission is to eliminate one of the biggest testing bottlenecks by ensuring reliable, compliant and readily available test data across multiple non-production environments. This role is ideal for an experienced Test Data Engineer who combines strong technical expertise with a pragmatic approach to automation, quality assurance and data management.

Responsibilities you'll have Design, build and maintain reusable test data assets Develop automated test data provisioning solutions Create self-service mechanisms enabling teams to access test data on demand Implement and maintain data masking and anonymization processes Ensure compliance with GDPR and internal data governance requirements Create and maintain synthetic test datasets for various testing scenarios Generate data for edge cases, negative tests and business-realistic scenarios Provision, refresh and clone datasets across non-production environments Support multiple teams performing parallel testing activities Integrate test data solutions with test automation frameworks Enable CI/CD-driven test data provisioning and automated regression testing Monitor test data availability, usability and quality Troubleshoot and resolve test data related issues and defects Maintain documentation, standards and data dependency mappings

Expected competences and knowledge 8+ years of experience in Test Data Management, Test Automation or related areas Strong knowledge of SQL and relational databases Experience working with mainframe environments

Hands-on experience with: Test data generation, Data masking and anonymization, Data cloning, Data subsetting, Data extraction and transformation, Test Data Management solutions

Experience supporting: Automated testing, Integration testing, End-to-End testing Scripting skills in Python, PowerShell, Java or similar technologies Understanding of CI/CD processes and DevOps practices Experience working in Agile delivery environments English proficiency at B2 level or higher

Technologies you'll work with SQL Relational Databases Python PowerShell Java CI/CD Pipelines DevOps Tooling Synthetic Data Generation Tools Test Automation Frameworks Mainframe Technologies

Client – why choose this particular client from the Jit portfolio? Jit Team has had an over-decade-long relationship with the leading financial group in the Nordic countries, and we are privileged to be our client's premier partner in Poland. At present, over 200 Jit personnel are engaged in the completion of more than 60 projects for this Norwegian major provider of financial services with a global presence and a strong focus on modern technology. Our customer's work atmosphere is epitomized by the Scandinavian culture, which is conducive to people who place emphasis on work-life balance and feedback culture. Furthermore, all projects are executed in international teams, giving constant exposure to the English language.

Test Data ManagementTest AutomationSQLRelational DatabasesMainframeData MaskingData AnonymizationPythonPowerShellJavaCI/CDDevOpsGDPRSynthetic Data GenerationAgilemulti-location

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