Salary: £36,000 - 50,000 per year Requirements: Minimum 3 years industry experience focused on network design and troubleshooting Proven expertise with core network technologies and infrastructure In-depth knowledge of hierarchical IP subnetting, BGP, OSPF routing protocols Advanced experience with Cisco Nexus, IOS XE, VXLAN overlay networks, and dual cloud solutions Experience in firewall management including IPS/IDS Valid SC security clearance Competent in MS Office Suite Strong communication skills Analytical thinking Experience working within the defence or public sector Computer Science degree or equivalent; Chartered Engineer status is a bonus Responsibilities: Support the core physical and virtual networking components for the NSoIT(D) Platform Design, develop, build, and validate networking solutions Produce detailed design artefacts Collaborate closely with the wider technical team to support system testing Resolve issues within the network infrastructure Technologies: Cloud Cisco Firewall Support Network Nexus Security iOS Atlassian Confluence JIRA VMware More: We are currently helping a leading client in the defence sector find an experienced SC Cleared Network Engineer to join our dynamic team. Based in Corsham, Wiltshire, or Portsmouth, Hampshire, this role offers a flexible hybrid working pattern of 2 to 3 days per week onsite. As a Network Engineer, you will play a key role in ensuring a secure, resilient, and efficient infrastructure for defence applications. This is a two-year contract opportunity starting in April 2026, offering a negotiable day rate (inside IR35). Join our collaborative team where your expertise makes a tangible difference to national security. last updated 7 week of 2026