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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.

Dortmund | Olpe | rdqa05

QA Engineer (f/m/d)

Don’t just go to work. Thrive. 
We look for people who are committed to openness and have the will to leave their mark in the world. You will join OX as part of a special team. As a talented individual you can advance within your department as well as getting the opportunity to work for OX globally. 

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

We are eMail
Worldwide companies like: BT, KPN, Comcast, Cox, 1&1, STRATO, Deutsche Telekom, Vodafone, Orange, Unitymedia, ItaliaOnline, Host Europe, NetCologne, and Rackspace all use our "white label" products for eMail, collaboration and DNS.

Open Source is our foundation
The mix of divergent perspectives, corporate objectives, and personal goals is our foundation and speeds innovation and development.


This job is the entry point for talented applicants into various OX business areas worldwide. As a member of our innovative team, you will have the unique and rewarded opportunity to become part of new and large scale projects, and to design them for the benefit of our customers.


What do you have to do

  • Ensuring high quality for customer-specific software projects
  • Analysis and risk assessment of customer requirements
  • Creation, maintenance, execution and documentation of (automated) tests
  • Collaboration in project teams and communication with technical customer departments
  • Active support of our development and operations teams
  • Creation, analysis and processing of error reports


That is what you offer

  • Study of computer science or comparable professional training and experience.
  • Experience with agile approaches to software testing and development.
  • Knowledge of tools, procedures and programming languages for test automation is required. The same applies to your willingness to familiarize yourself with new technologies and to contribute innovations.
  • Experienced handling and understanding of web-based applications, APIs.
  • A good eye for details, user expectations and potential sources of error.
  • Structured and result-oriented way of working as well as willingness to learn, joy of communication and independent cooperation.
  • Team skills, social competence and a solid knowledge of German and English, both spoken and written are a must.


Our offer to you

  • Solve challenging tasks in an international team of experts.
  • Use of state-of-the-art technologies and access to exciting projects.
  • Freedom to implement your own ideas and assume responsibility.
  • The flexibility to work from home or at any location in the OX world.
  • First-class equipment and an uncomplicated IT-affine environment.
  • Respect, honesty, appreciation, co-determination and equal pay are the foundations of our corporate culture.
  • Continuous personal development, training and conference offerings.
  • Flat hierarchies with "open door" policy, motivating work environment.
  • A dynamic environment with many opportunities for personal development.
  • A company pension scheme
  • Company sports - Free entry to various gyms and swimming pools

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, with further locations throughout Germany (Hamburg, Bremen, Dortmund, 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