CData Acquires Data Virtuality, Modernizing Enterprise Data Virtualization

Senior QA Engineer (Backend)

Your new career step with perfect work-life balance. 


Working at Data Virtuality means being part of an international team and thriving. What we offer is remote work from your home, wherever it is. Further, you can expect an unlimited long-term freelance contract with full-time work, benefits, and real team spirit.

At Data Virtuality, you will experience respectful interactions and harmonious teamwork without a dog-eat-dog mentality!


Full-time. Permanent contract. Remote. m/f/d

We are looking for a Backend Test Engineer to enhance the quality and performance of our software products. This role focuses on creating, executing, and maintaining comprehensive backend tests. The ideal candidate will be adept in testing various backend functionalities, including data virtualization, ETL/ELT processes, databases, and clustering technologies.

Key responsibilities include:

  • Designing, developing, and executing thorough backend tests to ensure our product’s integrity and performance.
  • Hands-on testing of various API interfaces such as REST, JDBC, ODBC, and OData, including conducting performance assessments.
  • Collaborating closely with development and product teams to ensure high-quality releases and achieve customer satisfaction.
  • Enhancing existing integration and API tests, and developing new ones using Java.
  • Continuously refining QA processes, methodologies, and tools to boost efficiency and effectiveness.

This position is ideal for someone with a strong background in backend system testing who thrives in a collaborative environment and is keen to drive improvements in quality assurance processes. The candidate will play a crucial role in ensuring that our software meets the highest standards of quality and reliability.


  • 5+ years of experience in a QA engineering role, with a focus on backend testing.
  • Deep knowledge of SQL and experience with relational databases, including database testing.
  • Solid experience in REST API backend testing.
  • Proficient in Java, with practical experience in developing backend test automation.
  • Proficiency in Git, Docker, and CI/CD pipelines (Jenkins or GitLab).
  • Familiarity with performance testing tools and methodologies, with the ability to conduct basic performance tests.


  • Experience with ETL/ELT product testing.
  • Understanding of data warehousing and RDBMS internals.
  • Knowledge of Python scripting.
  • Experience with distributed systems testing.
  • Experience with BI tools (e.g., Power BI, Tableau) and data integration systems (e.g., Pentaho, Informatica).
  • Familiarity with cloud environments (AWS, Azure, GCP).


  • Strong problem-solving, debugging, and investigative skills, with the ability to analyze log files, error messages, etc., to identify the root cause of problems.
  • Strong attention to detail and ability to prioritize tasks.
  • Strong communication and collaboration skills, capable of working effectively with cross-functional teams in a remote set-up.
  • Good command of English (upper intermediate or higher). Fluency in Ukrainian or Russian would be a plus.

Our Core Values

Your opinions are valued and listened to. We believe we can all learn from each other, and therefore making a mistake is only part of the path of growth.

You should have the freedom to choose how you work. We enable you to perform your everyday work self-determined and autonomous.

Trust in our employees is our top priority and is indispensable in our organizational structure as we do not believe in micromanagement.

Data Virtuality is loyal to its employees and always open to listening to them. At Data Virtuality, we respect every employee regardless of origin, religious beliefs, gender, position, and opinion.

What our amazing team worldwide loves about working with Data Virtuality

  • A stable and reliable job with the freedom and flexibility of a freelancer
  • Flexible working hours and workplace
  • Paid vacation days and paid sick leaves
  • Fast and dependable monthly payment – in EUR, USD, or Crypto, as you prefer
  • Contributing to the success of a growing company
  • Working with cutting-edge technologies
  • Knowledgeable and approachable C-Level
  • Continuity and growth potential
  • Friendly and international colleagues
  • Full integration into our teams and invitations for our team events worldwide

Data Virtuality in a Sec

Leading various large-scale data integration projects at a global media company, our founder Dr. Nick Golovin experienced that it isn’t enough to rely on just one data integration approach to meet the ever-changing business needs. That’s why the Data Virtuality Platform uniquely combines data virtualization and ETL to provide data professionals with a data integration tool that allows them to always choose the suitable method for the specific requirement. Data Virtuality’s flexible data integration approach is a reliable enabler and accelerator for modern data architectures, like data fabric, data mesh, unified data platforms, and hybrid-/multi-cloud environments.


Tina, HR Business Partner at Data Virtuality

Job Category: Engineering
Job Type: Freelance Full Time
Job Location: Remote

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