You will join a large-scale network environment supporting a wide range of organizations across approximately 180 sites. The network team is responsible for the physical and logical availability, stability, and evolution of the network infrastructure.In this role, you act as a senior technical reference within the network team. You combine deep hands-on expertise with the ability to guide projects, support less experienced engineers, and contribute to strategic technical decisions when needed. The environment is strongly
Cisco-centric
, with a clear expectation of practical experience in
Cisco ACI
.
What you'll do
* Design, implement, and operate complex network infrastructures across multiple sites
* Take ownership of network-related projects from design through implementation and handover
* Act as a senior escalation point for complex incidents and troubleshooting
* Provide hands-on configuration and administration of Cisco network components
* Contribute to the evolution of the network architecture, including data center and campus networking
* Support and coach junior network engineers in their technical development
* Advise the team lead on technical and architectural decisions when required
You work daily with:
* Cisco ACI: creation and management of EPGs, Bridge Domains, port configurations
* Routing & Switching: VLAN, STP, HSRP, OSPF, BGP on Cisco Catalyst
* MPLS: BGP and VRF routing
* Wireless: deployment and administration of Cisco WLC 9800
* Cisco ISE: basic access policy administration
* Cisco Catalyst Center: supervision, inventory, and automation
* Network supervision and troubleshooting using tools such as Wireshark
What are we looking for?
* You have
a minimum of 10 years of professional experience
as a Network Engineer in complex enterprise environments
* You have
hands-on, proven experience with Cisco ACI
in production environments
* You demonstrate deep expertise in
Cisco routing, switching, and network troubleshooting
* You are comfortable combining operational work with project ownership and architectural thinking
* You are fluent in
French and
have a good working knowledge of
English
Nice to have
* CCIE certification
(or equivalent expert-level certification)
What do we offer?
Location: Brussels (hybrid)
Start date: January 2026
Duration: Until December 2026
Contract: Freelance or Permanent