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Jobs at Open-Xchange

Interested in becoming part of something big?
You have landed in the right place. We are always looking for great talent to join our variety of departments. Check out our current job vacancies below or send us your speculative application. Become part of an exciting team at OX.

Den Haag | Europe | rdpd03

Senior QA Engineer (f/m/d)

Don’t just go to work. Thrive.
We need people who are committed to openness, have a rebellious business spirit and the will to revolutionize the market.

Open people for open source! 
This position is a launch pad for highly talented individuals into various opportunities, within the many business lines of OX globally. As a member of our innovative team, you will have the unique and rewarding opportunity to be part of new and large scaling projects and shape the way customers get their needs fulfilled.

Our Vision
A borderless internet that is open, safe and free.


As a Senior Quality-Assurance Engineer you will work in the PowerDNS Engineering team, as well as with other parts of Open-Xchange like the Support and Professional Services teams. QA is an integral part of the development process, and as such you will be involved from design, to building, to review and finally to release.

The close cooperation between the PowerDNS Engineering team and the sales, services and development teams in the rest of the larger Open-Xchange organization, means growth opportunities abound inside and outside the team. In other words, this position is a great opportunity for your personal development. 


Your passion / Your job

  • Create, maintain, execute and document (automated) tests
  • Collaboration with project teams and technical customer departments
  • Active support of our development and operations teams
  • Analysis of technical problems and communication with our customers in cooperation with our support team
  • Analysis and risk assessment of customer requirements
  • Ensure designs are complete and in compliance with specifications
  • Support continuous improvement by investigating alternatives and technologies
  • Must be very organized with a strong attention to detail and ability to work well under pressure


What do you bring to the table

  • Study of computer science or comparable vocational education and experience
  • Experience with agile approaches to software testing and (test-driven) development
  • Knowledge of test automation tools, procedures and programming languages is required as well as the willingness to learn new technologies and to contribute innovations
  • A good eye for details, user expectations and potential sources of error
  • Structured and results-oriented working style as well as willingness to learn and good communication/social skills
  • Good verbal and written communication skills in English; German and/or Dutch and/or French a nice to have.


What do we offer

  • Working on modern DNS, load-balancing and traffic-filtering software in an international team
  • Wide scope to develop your own ideas for our product
  • HomeOffice and the opportunity to work from one of our well-appointed worldwide offices
  • The most current and jazzy equipment
  • Continuous personal development & training
  • Flat hierarchies combined with a "Open Door" policy

About Open-Xchange

Open-Xchange (OX) is a market leader in Mail / Messaging and DNS-based security services, with more than 200m seats sold through international hosting and telco providers worldwide, including partners such as 1&1, Orange, Italiaonline, Comcast, GoDaddy or Softbank.

We at OX have our roots in Open Source, and this has shaped our view of the world and culture – open, diverse, and with a bias to act, giving everyone at OX room to take responsibility within their team and grow. OX believes in an internet that is open, safe and free. We want to create competitive products that allow our providers to deliver secure internet services with a great user experience, and that respect privacy and generate value.

With some 270+ people worldwide, OX develops and operates Open Source software (aaS) for mail / messaging (OX App SuiteOX Guard) and collaboration / productivity (OX DriveOX Documents). OX’s  Dovecot is the world’s dominant open-source IMAP server software, and our PowerDNS provides secure DNS services to our telco customers and their users.

Our business is fast-paced and changing constantly. We are looking for people who share our beliefs, who are out there to make a difference, are entrepreneurial and enjoy working in a high-tech environment as part of a truly international team. OX is headquartered in Cologne, Germany, with further locations throughout Germany (Hamburg, Bremen, Dortmund, Cologne, Olpe and Nuremberg), the USA (Louisville, KY), Finland, the Netherlands, Italy, France, Spain and Japan (Tokyo).

If you are interested, please contact Jochen F. Schude for further information - or send us your paperless application with a cover letter including the job ID (see at the top left corner), tabular CV, certificates, salary expectations and the earliest possible date of entry by e-mail to recruiting at