abakus_it AbAKUS it-solutions

Expert in IT Comfort


You will be part of the Managed Services Architecture Team, in charge of designing the Network and security service.

A team of 45 people is working permanently on-site (Luxembourg and Brussel).


  • Maintain complex and challenging infrastructures in Unified Communication (Design)
  • Setup and test in lab new technologies
  • Prepare and execute Test plan
  • Contribute to the delivery of projects (Transition)
  • Propose and contribute to technical improvement plans
  • Ensure compliance (in operations and projects)
  • Troubleshoot complex incidents
  • Insure client satisfaction
  • Interact and co-operate with vendors
  • Contribute actively to Teams synergy
  • Education : BAC +5 in computer sciences or equivalent
  • 5+ years of VOIP experience, preferably in a large enterprise environment
  • Have a deep knowledge of, and solid experience with deploying and configuring unified communications, such as:

Your Profile

  • Cisco Unified Communications Manager experience required
  •  IP telephony & Video conference
  • Collaboration tools such as Skype for Business/Lync, Cisco Webex & Cisco IM & Presence / Cisco Jabber
  • Integration with classic telephony during a migration phase (Siemens)
  • Integration with Active Directory/ LDAP
  • External gateways (Session Border Controller and Public gateways)
  • Internet Protocol: IP, TCP, UDP, SIP, H323, DNS, HTTP, SSL, IPSEC,
  • Have been working with infrastructure areas like;
  • Cisco networking equipment, including WLAN.
  • Firewalls (preferably Checkpoint/fortinet).
  • Cloud-based infrastructure.
  • Automation and Infrastructure as Code: Bash/Perl/Python Scripting, Ansible
  • Fluent in English is a requirement, French is an advantage
  • Any UC Certification is considered as an advantage
  • Experience in delivering in a production environment is considered as an advantage

Soft Skills

  • good listening and communication skills
  • proactive and taking initiative
  • real team player and aware of cross-cultural working
  • Excellent verbal and written communication skills; ability to work within strict deadlines with a wide spectrum of people

 Language skills

  • English proficient
  • French

Location and working hours

  • Provision of the above-mentioned services basically in Luxembourg, with a possibility to work in Brussels about 2-4 days per month.
  • Occasional interventions outside of normal working hours may be requested

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ABAKUS it-solutions is a company where a bit of madness and serious are not incompatible ! Join-us !

and help us providing the IT comfort our customers deserve!