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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.


Linux System Administrator EU (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! 
By joining OX as part of a special team, this position is a launch pad for highly talented individuals to build their experience and access many opportunities working for OX globally.   

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

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


As a Linux System Administrator in Europe you will make the difference

This position will support our SaaS email platform, providing service to large customers for tens of millions of end users. Core competencies required include automated deployment, virtualization and mail protocols. You will be expected to provide quick resolution of difficult technical problems and we are asking you to share your major contributions regarding technical architecture, documentation and systems project management. The close cooperation between you and the Services and Engineering 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 to build a career track.


Your passion / Your job

  • Assist with administering mission-critical software such as Dovecot, LDAP, Galera, Cassandra
  • Hardware installation and troubleshooting
  • Shell scripting
  • Server deployment, configuration and management using Ansible / Chef
  • Monitor system logs and activities
  • Participate in a 24 x 7 on-call rotation supporting and collaborate with global operations teams
  • Assist with security audit and compliance tasks
  • Document architecture and essential function methodology


What do you bring to the table

  • Bachelor’s degree in a related field or 8+ years of experience working with Linux
  • 5+ years working with VMWare or OpenStack
  • 5+ years scripting in bash, perl, python, or ruby
  • Experience with OpenStack, Ansible, Dovecot, Cassandra & Java
  • Perform security hardening via group policies, local policies, scripting, etc.
  • Provide on-call support on a rotational basis as assigned
  • Willingness to do some domestic and international travel
  • Solid understanding of networking concepts: the OSI model, TCP, IP, routing, firewalls & load balancers
  • Ability to work as part of the team but also self-managed
  • Interest in learning new technologies and working with proof of concepts to promote new technologies
  • Excellent written and verbal communication skills; willingness to present technical information to a group
  • Storage concepts including iSCSI, fiber channel, LVM and NFS
  • Familiarity with cloud infrastructure and virtualization technologies including OpenStack and VMware.
  • Experience with object storage platforms like Scality, Ceph & SWIFT
  • Understanding of multi-tiered applications
  • Experience with logging technologies such as Graylog, Kibana, or Splunk
  • Design operations and implementation scripts and automation; configure and write supporting documentation
  • Ensure availability, scalability and performance of the Linux Server environment
  • Perform ongoing maintenance, patching, hot fixes and software upgrades
  • Develop and maintain operations and disaster recover documentation as well as standard operating procedures.
  • Lead and assist in areas of technical innovations and cost savings


What do we offer

  • Working on a modern cloud 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
  • Plenty of opportunities to attend conferences and industry gatherings with your co-workers, and an awesome end-of-year party

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