The largest ICT employer in Hungary, Deutsche Telekom IT Solutions (formerly IT-Services Hungary, ITSH) is a subsidiary of the Deutsche Telekom Group. Established in 2006, the company provides a wide portfolio of IT and telecommunications services with more than 5000 employees. ITSH was awarded with the Best in Educational Cooperation prize by HIPA in 2019, acknowledged as one of the most attractive workplaces by PwC Hungary’s independent survey in 2021 and rewarded with the title of the Most Ethical Multinational Company in 2019. The company continuously develops its four sites in Budapest, Debrecen, Pécs and Szeged and is looking for skilled IT professionals to join its team.

We are seeking a skilled and detail-oriented QA Engineer – Data Pipeline & Orchestration Systems (Dagster/Airflow) to take ownership of quality assurance across modern data workflow orchestration platforms. You will ensure the reliability, integrity, and security of data pipelines and orchestrated workflows, with a strong focus on automated testing, quality gates, and end-to-end validation within continuous integration environments. The ideal candidate has a solid background in QA automation for data-centric systems, experience in workflow orchestration platforms such as Dagster, Airflow, or Prefect, and is passionate about designing robust quality controls across ETL/ELT pipelines and model/data delivery processes.

Responsibilities:

1. Data Orchestration pipeline Ownership: Take complete ownership of the Data orchestration pipeline quality, to ensure that all pipeline steps are executed correct and robust
2. Test Automation: Design, implement, and maintain automated test suites to validate the functionality and integrity of the workflows, single tasks/operations, and assets. This includes data-centric test cases for
3. Schema validation
4. Data Quality assertions
5. Resource Mocking (I/O, Databases)
6. Quality Assurance: Collaborate with development and operations teams to establish and enforce quality assurance processes and standards
7. Pipeline Monitoring: Integrate with built-in monitoring and external monitors to track health, errors, and success metrics.
8. Regression Testing: Develop and execute regression testing strategies to ensure that new developments do not introduce regressions.
9. Security Testing: Implement security testing practices to identify vulnerabilities and ensure the secure delivery of software.
10. QGate Definition: Define and implement Quality Gates (QGates) at critical points within the orchestration pipeline to ensure that only high-quality and validated code progresses to subsequent stages.
11. Documentation: Create and maintain comprehensive documentation for testing procedures, automation scripts, CI/CD pipeline configurations, and detailed descriptions of QGates.
12. Collaboration: Work closely with developers, DevOps engineers, and other stakeholders to understand requirements and proactively address quality concerns throughout the CI/CD process. 

Required experience:

• Experience with version control systems (for example: git) 
• Experience with API testing
• Experience with workflow orchestration (Dagster, Airflow, Prefect)
• Experience with creating automated tests
• Experience with negative test processes and knowledge of error codes
• Familiarity with Github Actions (or other pipelines engines, e.g. gitlab ci/cd, jenkins, circle ci etc.)
• Experience with Python, pytest, etc.
• Experience with any modern IDE (ItelliJ IDEA, VS Code, etc.)
• Knowing Jira, Confluence, Xray at excellent level 

Language:

• At least B2 English, German is an advantage 

Benefits:

• Competitive salary and comprehensive benefits package.
• Opportunities for professional growth and skill development.
• Collaborative and innovative work environment.
• Exposure to cutting-edge technologies in QA, test automation, and CI/CD.

If you are a QA Engineer with a passion for ensuring the quality of CI/CD pipelines, have experience with defining and managing Quality Gates, and possess the skills to automate and streamline the testing process, we invite you to apply and be a key player in maintaining the high standards of our software development and delivery practices. 

* Please be informed that our remote working possibility is only available within Hungary due to European taxation regulation.