Jobs at ContactOffice: Linux System Engineer (m/f)

we are hiring blackboardAbout ContactOffice

Our passionate team is behind the ContactOffice ( technology, one of the European leaders in the field of cloud collaboration (calendar, contacts, documents, e-mail, SMS, fax…). Our application is available both in Cloud or licence mode. ContactOffice counts among its customers leading corporations and universities such as TNT Airways, Laborelec, Ores, the universities of Lyon, Aix-Marseille, Toulouse, Bordeaux, etc.We are also the team behind a number of popular sites such as,,…

In order to support our growth, ContactOffice Group is currently seeking a professionally experienced Linux System Engineer.


Are you ready to discover a challenging position combining cloud technologies, big data and high performance in a seamless user experience ?

Here is what we’re looking for

  • Relevant Work : Experience: 6+ years
  • Career Level:  Experienced
  • Position: Senior System Engineer
  • Education Level:  Master in sciences (no soft sciences master such as Philisophy, languages, …)
  • Job Type:  Employee
  • Job Status:  Full Time
  • Location: Brussels (Boitsfort)
  • Must have advanced experience with Linux systems (Debian, RedHat, …)
  • Must have advanced experience with virtualization tools (Xen, KVM, …);
  • Deep understanding of internet and networking protocols is a must;
  • Good knowledge of firewalling as well as advanced filed system for large volume storage (LVS, LVM, …) would be a plus;
  • Knowledge of Java technologies would be a plus;

Some remote home work will be possible.

Some day travels to customer’s premises might be required (although very rare in practice).


Your tasks

  • Installation, maintenance and monitoring of our server infrastructure
  • Installation, maintenance and monitoring of the server infrastructure of our customers
  • Update of the ContactOffice application on our servers and on the servers of our customers
  • Updating and maintenance of the procedures and documents relative to our system operations
  • Will take gradually take full responsibilities on daily operations, maintenance and monitoring of 80 Linux systems;
  • Maintenance and monitoring of network and firewall
  • Management of log files and appropriate actions
  • Setup and maintenance of monitoring and alert system
  • Participation in definition of system, network and security policy of the company
  • Training of customers in system and maintenance aspects.
  • Support towards our private label customers of the business critical locally hosted or externally hosted versions of our application
  • Physical intervention on the servers whenever distant intervention is not possible
  • Work with advanced IT technologies, such as enterprise messaging protocols, high volume storage and databases as well as online billing system
  • Will take in charge the bi-weekly or weekly maintenance of the ContactOffice applications;
  • Will be part of an ‘On Call’ team for night/weekend alerts mangement.
  • Will take in charge the setup of the ContactOffice applications on remote client devices as well as fine tuning setups for best performance;
  • Will take in charge the setup, maintenance and tuning of side applications (Postfix, SpamAssassin, ClamAV, DCC, Nagios, Munin, Apache, Jetty, Java, Java VM ….);
  • Will take in charge level3 support requests;
  • Will take in charge scripting (bash, perl, …) and log analysis;

Are you awesome at internet technologies and protocoles with a passion for system engineering and you don’t take yourself too serious?

Then please submit your application to now and include the following information

  1. Your resume
  2. Any work examples
  3. Why you’d be a great fit with our team
  4. Your LinkedIn, Twitter and/or Facebook profile URL
  5. Any other profile that might be of interest: Github, Bitbucket,…




ContactOffice Team

Collaboration and Messaging Web Application Suite (

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