Senior Network Engineer

When connectivity becomes critical, you're the one who keeps everything running.

Our client in
Limburg
is looking for an experienced
Senior Network Engineer / Architect
with strong expertise in
networking, security, VoIP and DDI
.

In this role, you combine
architectural responsibility with hands-on implementation
across
Extreme Networks, Palo Alto, Illumio, Infoblox, Mitel and Microsoft Teams Phone
, within a
24/7 mission-critical environment
where
continuity is key
.

Your Impact

• Design and document a
  future-proof datacenter and enterprise network
  (Extreme Networks).
• Build and maintain
  cybersecurity by design
  with
  Palo Alto
  ,
  Illumio
  , and advanced segmentation.
• Develop robust
  VoIP and collaboration solutions
  : Mitel, Teams Phone, SIP, QoS, number plans.
• Lead
  implementations and migrations
  with minimal downtime in a 24/7-critical setting.
• Handle
  monitoring, troubleshooting (L1–L7)
  and capacity management.
• Define standards, coach colleagues, and communicate clearly between IT and business teams.

Technical Profile

• 10+ years of experience
  in enterprise environments with focus on
  networking, security, VoIP and DDI solutions
  .
• 5+ years
  in a
  lead, architect or senior engineer
  role.

Deep expertise in:

• Network design & protocols:
  BGP, OSPF, VLAN, subnetting, routing, TCP/IP stack.
• Security:
  Palo Alto firewalls, segmentation, NAC/802.1X, Illumio microsegmentation, threat prevention.
• VoIP & Collaboration:
  SIP, QoS/DSCP, number plans, Mitel, Teams Phone.
• DDI solutions:
  DNS/DHCP/IPAM (Infoblox NIOS).
• Automation & IaC:
  Ansible, Python, Terraform.
• Enterprise networking:
  SD-WAN / SASE, SIEM/SOAR, ITIL-based operations.
• Monitoring & troubleshooting:
  Packet captures, firewall logs, performance optimisation.

Who You Are

• A
  hands-on, humble professional
  who values collaboration over ego.
• Analytical, structured and calm under pressure.
• Fluent in
  Dutch
  and professional in
  English
  ;
  French
  is a plus.

Certifications that make you stand out:

PCNSE, Extreme Certified Professional/Expert, JNCIP/IE, Illumio, Infoblox NIOS, ITIL.

What You Get

• A
  visible, high-impact role
  in a 24/7-critical environment.
• Company car
  , competitive salary package and
  training budget
  for certifications.
• A
  team that grows together
  , with room for initiative and expertise.
• Based in
  Limburg (Belgium)
  –
  hybrid work possible
  .

Ready to design the networks of tomorrow?

Apply today or reach out - we'll be happy to tell you more.