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Network Security Engineer

  • Brussel, Brussel
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Senior Network Security Engineer

Location: Brussels

Languages: Dutch/French + English

Start Date: 28/09/2026

End Date: 27/09/2027

Responsibilities:

  • Operate within a team supporting 24/7 company activities.
  • Work in both IT and OT environments, ensuring diligent preparation and execution of changes.
  • Participate in the deployment and maintenance of IT systems.
  • Support colleagues in Belgium and other parts of Europe.
  • Engage with various networking aspects including routing, switching, and software.
  • Collaborate with other ICT teams and work independently when required.
  • Provide support to teammates and be open to standby roles.

Technical Environment:

  • Operate the entire network stack from LAN to WAN and from the datacentre to the cloud.
  • Work primarily in a Cisco environment, including Cisco ACI, MS Azure, Cisco SDWAN, Cisco ASR, ISR, catalyst, and nexus devices.
  • Engage with firewalls from Checkpoint and Palo Alto, Zabbix, Elastic, and ISE.

Required Qualifications and Experience:

  • Background in computer science.
  • Proficient in Dutch or French and fluent in English.
  • In-depth knowledge of routing and switching protocols such as OSFP, ISIS, MP-BGP, MST.
  • Experience with cloud technologies and Cisco Wireless.
  • Familiarity with Python and/or Ansible for automation.
  • Knowledge of backend tools for monitoring, NAC, central syslog, TACACS, and RADIUS servers.
  • Understanding of firewall technologies.
  • Knowledge of ACI or Cisco SDWAN is a plus.

Additional Requirements:

  • Own a car and be able to travel to Belgian locations when required.
  • Open to hybrid work after an initial full-time office period.
  • Willingness to pick up a standby role (max 1 week in 4).

This position offers a dynamic work environment with opportunities to engage in various projects, including connectivity setup in new data centers, securing and connecting to the cloud, modernizing WAN networks, and supporting functional evolutions requested by application teams.