Deadline Date: Thursday 22 October 2026 Requirement: Voice Specialist Skype Location: Brussels, BE Full Time On-Site: Yes Time On-Site: 100% Total Scope of the request (hours): 342 Required Start Date: 26 November 2026 End Contract Date: 31 December 2026 Required Security Clearance: NATO SECRET Duties & Role: Under the direction of Head, Processing & Storage, but largely on own initiative, the incumbent will perform the following duties: • Provides first and second line network support to the Service Centre; • Performs diagnoses and resolve voice incidents and problems; • Install, replace, modify and configure network voice systems; • Monitors network systems and proactively report and resolve potential network voice issues; • Performs monthly software patching of the supported Skype For Business systems; • Work outside office hours or on weekends as required; • Seeks recommendations from his/ her superiors for technical solutions; • Investigates and propose improvements and solutions to equipment and configuration problems; • Maintains liaison with other CSU internal units, Service Lines and other technical organizations; • Creates and maintains Standard Operating Procedures and documentation of the supported Unified Communications systems; • Implements procedures, tools and techniques for monitoring and managing the performance of ICT infrastructure (Voice) and provides reports as required; • Monitors and reports on the capacity of the assigned ICT infrastructure (Voice); • Assists with and implements assigned project work packages; • Works with limited supervision; • Coordinates and conducts own work to meet quality targets; • Performs other duties as may be required Specific Working Conditions: NATO will retain the intellectual property rights for all products developed in relation to this project. Extension in 2027 is foreseen. Requirements Skills, Knowledge & Experience: • The candidate must have a currently active NATO SECRET security clearance • Higher vocational training in a relevant discipline with 2 years post-related experience or a secondary educational qualification with 4 years post-related experience; • At least 3 year experience in a similar position; • At least 3 year experience with operation, deployment and configuration of Unified Communications systems such as Microsoft Lync or Microsoft Skype for Business; • Experience with Voice Session Border Controllers; • A good knowledge of protocols and standards utilized in VoIP and Unified Communications; SIP, TLS, MGCP, H.323, RTP (incl. G.711, G.729 codecs), and other similar standards; • Experience in utilizing vendor's toolkits for collection of maintenance data, and ability to analyze them for both service improvement and troubleshooting purposes; • Experience with device management tools such as Microsoft SCOM, ZABBIX, HP Network Automation, Solar Winds to monitor devices, provide reporting and identifying devices that aren't functioning properly; • Experience with O&M of PABX systems; • Experience with Polycom provisioning systems and Polycom phones; • Experience with Microsoft PowerShell SFB automation scripting and toolkits. Desirable: • Knowledge and experience with maintaining PABX equipment, preferably Alcatel; • Knowledge and experience with AudioCodes SBCs; • Experience with Active Directory and PKI technologies; • ITIL certificate; • Prior experience of working in an international environment comprising both military and civilian elements; • Knowledge of NATO responsibilities and organization