Senior Network Engineer / IT Architect

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.