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Spektrum Management Group

Aerospace, defense and government support

Voice / Unified Communications Engineer - Skype for Business

Full-TimeUpdated on 10/14/2026
No salary listed
Mid
Brussels, Belgium
In Person100% on-site; some travel to other NATO sites may be required.
IT OperationsSystem Administration

About the job

Requirements
  • Complete higher vocational training in a relevant discipline and have at least 2 years of post-qualification experience, or have secondary education and at least 4 years of experience.
  • Have at least 3 years of experience in a similar position.
  • Have at least 3 years of experience operating, deploying, and configuring Unified Communications systems such as Microsoft Lync or Skype for Business.
  • Have experience with voice Session Border Controllers.
  • Have good knowledge of VoIP and Unified Communications protocols and standards, including SIP, TLS, MGCP, H.323, RTP, and G.711 and G.729 codecs.
  • Have experience using vendor toolkits to collect and analyse maintenance data for service improvement and troubleshooting.
  • Have experience with device management and monitoring tools such as Microsoft SCOM, Zabbix, HP Network Automation, or SolarWinds.
  • Have experience with operations and maintenance of PABX systems.
  • Have experience with Polycom provisioning systems and Polycom phones.
  • Have experience with PowerShell scripting and toolkits for Skype for Business automation.
  • Hold a valid National or NATO Secret personal security clearance.
Responsibilities
  • Provide first- and second-line network voice support to the Service Centre.
  • Diagnose and resolve voice incidents and problems.
  • Install, replace, modify, and configure network voice systems.
  • Monitor network voice systems and proactively report and resolve potential issues.
  • Perform monthly software patching of the supported Skype for Business systems.
  • Implement procedures, tools, and techniques for monitoring and managing voice ICT infrastructure performance, and produce reports as required.
  • Monitor and report on the capacity of the assigned voice infrastructure.
  • Investigate and propose improvements and solutions to equipment and configuration problems.
  • Create and maintain SOPs and documentation for the supported Unified Communications systems.
  • Liaise with other CSU units, Service Lines, and technical organisations.
  • Assist with and implement assigned project work packages.
  • Work outside office hours or on weekends as required.
  • Work with limited supervision and conduct own work to meet quality targets.
  • Travel to other NATO sites as required.
Desired Qualifications
  • Maintain PABX equipment, preferably Alcatel.
  • Have experience with AudioCodes SBCs.
  • Have knowledge of Active Directory and PKI technologies.
  • Hold an ITIL certificate.
  • Have experience in an international environment with both military and civilian elements.
  • Have knowledge of NATO responsibilities and organisation.

About the company

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Spektrum Management Group

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Spektrum Management Group provides consulting, staffing, logistics and market support across defense, humanitarian and government sectors. It helps clients plan, win, deliver and operate programs, recruits specialist personnel and coordinates products or support for demanding locations. The company focuses on international institutions, English-speaking governments and ministries of defense, with documented work supporting NATO requirements. Its model combines subject-matter experts, supplier networks and project teams rather than acting only as a recruitment agency or equipment reseller.

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