Senior Enterprise Network Architect: Nexus/SD-WAN/Security

KBR; Guildford; On-site; GBP 48,000 - 88,000; Full time

Job summary

KBR is seeking a Lead IT Network Administrator in the United Kingdom to support complex, mission-critical IT infrastructure across defence, government, and secure environments. The role focuses on Cisco Nexus, ISE, NDFC, VXLAN/EVPN, SD-WAN, and security platforms, with responsibilities spanning data centres, offices, and remote access.

The position requires BPSS clearance or higher, strong troubleshooting skills, and experience with Palo Alto, F5 BIG-IP, and Azure networking.

Qualifications

• Must hold BPSS clearance or higher and UK citizenship.

Responsibilities

• Configure, administer, and optimise Cisco networking environments including ISE, NDFC, Nexus, Leaf-Spine, VXLAN/EVPN, and SD-WAN.
• Manage enterprise routing and switching across data centres, offices, cloud, and remote access.
• Administer Palo Alto firewalls and security solutions; manage F5 BIG-IP and cloud networking.
• Support Azure networking services and network monitoring, troubleshooting, and DR planning.
• Collaborate with infrastructure, cybersecurity, cloud, application, and third-party teams.

Skills

Networking expertise

Security awareness

Tools

Cisco Nexus

NDFC

Cisco ISE

SD-WAN

VXLAN

EVPN

Palo Alto

F5 BIG-IP

Azure networking

Ansible

Terraform

Python

Job description

KBR is seeking a Lead IT Network Administrator in the United Kingdom to support complex, mission-critical IT infrastructure across defence, government, and secure environments. The role focuses on Cisco Nexus, ISE, NDFC, VXLAN/EVPN, SD-WAN, and security platforms, with responsibilities spanning data centres, offices, and remote access.

The position requires BPSS clearance or higher, strong troubleshooting skills, and experience with Palo Alto, F5 BIG-IP, and Azure networking.