Network Engineer

ComXps; England; On-site; GBP 50,000 - 70,000; Full time

Job summary

A technology consultancy in the United Kingdom is seeking a networking professional with Defence Background for a contract role. The ideal candidate should have at least 3 years of experience, strong skills in IP subnetting, and hold relevant networking certifications. Responsibilities include implementing and troubleshooting networking solutions, and documenting test procedures. This role requires SC clearance and allows for work onsite in Wiltshire for 2-3 days per week.

Qualifications

• At least 3 years of experience in the Defence sector.
• Strong communication skills, both written and verbal.
• Strong critical thinking and analytical skills.

Responsibilities

• Design, implement, and troubleshoot networking solutions.
• Build and troubleshoot network topologies.
• Document test procedures and prepare test documentation.

Skills

Hierarchical IP Subnetting

OSPF

BGP

Understanding of routers

Cisco Nexus

VXLAN

Network security best practices

Education

CCNP (Cisco Certified Network Professional)

VMware VCP-NV

Tools

MS Office Suite

Job description

This role is Inside IR35.

Clearance: SC clearance, with DV clearance an advantage.

Contract Length: 5th January 2026 – 31st March 2026.

Location: Wiltshire - 2-3 days on site.

Defence Background

Demonstrable experience of at least 3 years within the industry with detailed knowledge and understanding, of the design, implementation, and troubleshooting of the following:

• Hierarchical IP Subnetting.
• Routing protocols, internal and external, OSPF, and BGP.
• Advanced knowledge of routers, switches and firewalls.
• Core network technologies and infrastructure:
• Cisco Nexus
• Cisco IOS XE
• Leaf and Spine network architecture
• VXLAN Overlay networks
• Dual Cloud Dual Hub DMVPN Solutions
• Firewall IPS/IDS
• AAA Management Platform e.g. ISE
• VXLAN
• TRL Crypto
• Configuration of devices and management of keymat
• All aspects of QOS (Traffic Shaping / Policing / Scheduling / Congestion Management and Avoidance).

At least one of the following professional certifications that have been obtained within the last five years:

• Networking certification – at least CCNP (Cisco Certified Network Professional) or similar.
• Virtualisation certification - VMware VCP-NV (VMware vCenter Certified Professional – Network Virtualisation)

Strong communication skills, both written and verbal.

Strong critical thinking and analytical skills to solve problems and propose new ideas.

Competency in MS Office Suite.

Desirable Skills

Experienced in:-

• Building and troubleshooting network topologies
• Documenting test procedures, preparing test documentation including test plans, test scripts, evidence collection, defect reporting.
• Network security best practices
• Deployment of virtual routers instances