Network Security Engineer

V-IT NV; Brussel; Hybride; EUR 70 000 - 110 000; Plein temps

Résumé du poste

V-IT NV is seeking a Senior Network Security Engineer to support 24/7 operations across IT and OT environments in Brussels. You will manage routing, switching, and security in Cisco-centric networks, including ACI and SD-WAN, while collaborating with ICT teams across Europe.

The role requires fluency in English with Dutch or French, cloud experience, and automation skills (Python/Ansible). A hybrid work setup is available after an initial office period.

Qualifications

• Background in computer science.
• Fluent in English; Dutch or French also required.
• Knowledge of routing and switching protocols (OSPF, ISIS, MP-BGP, MST).
• Experience with cloud technologies and Cisco Wireless.
• Familiarity with Python and/or Ansible for automation.
• Knowledge of monitoring, NAC, central syslog, TACACS and RADIUS servers.
• Understanding of firewall technologies.
• Knowledge of ACI or Cisco SDWAN is a plus.

Responsabilités

• Operate within a 24/7 team supporting company activities.
• Work in IT and OT environments; prepare and execute changes.
• Deploy and maintain IT systems.
• Support colleagues in Belgium and Europe.
• Engage with routing, switching and software networking aspects.
• Collaborate with ICT teams and work independently when required.
• Provide support to teammates and standby roles.

Connaissances

Networking knowledge

Python

Ansible

OSPF

ISIS

MP-BGP

MST

Cloud technologies

Cisco Wireless

Monitoring tools

NAC

Syslog

TACACS

RADIUS

Firewalls

Cisco ACI

Cisco SD-WAN

Python/Ansible automation

Travel readiness

Formation

Computer science degree

Outils

Cisco ACI

MS Azure

Cisco SD-WAN

Cisco ASR

Catalyst

Nexus

Checkpoint firewalls

Palo Alto firewalls

Zabbix

Elastic

ISE

Description du poste

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.