Network Administrator

Job Title: Network and Telephony Administrator

Language:English, French or Dutch

Location: 1000 Brussels, Belgium

Duration: 06/05/2026 - 06/07/2026

Work Mode: Hybrid ( 2 or 3 days onsite per week)

Work regime: Full time

Job Description - Roles and Responsibilities

We are looking for a network administrator with knowledge of telephony and contact centers or ready to acquire them to strengthen the network and telephony team.

The network and telephony team is responsible for setting up, managing, supporting and improving Client' network and telephony infrastructure.

In concrete terms, you may be responsible for the following tasks:

• Network Tracking, Management and Monitoring
• Replacement, addition, monitoring, maintenance of network infrastructure components (switch, router, proxy application, wifi appliance, FW, ...
• Management, implementation and maintenance of network security equipment (Firewall, Web application firewall, email secure gateway,)
• Setting up network links between the different sites
• Setting up and configuring network equipment according to the plans given by the network architecture team
• Management, implementation and maintenance of network monitoring tools for capacity management and network traffic evolution
• Support to the various ICT teams in incident management (level 2 and 3 support)
• Proposals for network architecture and security improvements.
• Daily IP telephony management
• Participated in the deployment of new contact centers to improve the operation of services
• On an ad hoc and occasional basis, participation in small network cabling

On the other hand, and in order to participate in the automation of tasks, you have a good knowledge of automation principles, infrastructure provisioning tools as well as scripting and automation languages

The technical skills sought are

• Ethernet, TCP/IP
• Wi-Fi: Cisco 5500 and C9800 controllers,
• Managing Nexus 9000 Series Routers
• Switches C9200, etc
• Fortigate 70F and 600E firewalls. Architecture management with virtual multi-domains.
• Security rules in a Windows environment
• DNS, VLAN, Proxy, VPN SSL, Cisco UCCM et UCCX, WLC, NAC, HSRP, LACP
• Small network cabling

Skills

• Cisco: LevelConfirmed Most recent experience Any time
• DNS: LevelConfirmed Most recent experience Any time
• Fortigate: Level ConfirmedMost recent experience Any time
• Microsoft Windows: Level ConfirmedMost recent experience Any time
• Security Expertise: Level ConfirmedMost recent experience More than 3 years ago
• TCP/IP: LevelConfirmed Most recent experience Any time
• VPN: LevelConfirmed Most recent experience Any time

Languages

• Dutch or French: Level Native
• English: LevelPassive knowledge

Questions

• It is expected that the presence on site in Brussels will be at least 60% of the time. Is it feasible for you? N.B: in the event of a negative one, the profile will be de facto rejected (exclusion criterion).
• Do you have experience in the public sector?
• Can you explain your experience with Cisco hardware?
• If you don't have experience in a CISCO contact center, are you ready to train in this field?
• Can you explain your experience with Fortinet hardware?