Job Title: SC Cleared Network Engineer Location: Corsham 2-3 days Duration: 31/03/2026 with likely extension Rate: Up to 725 per day via an approved umbrella company Our client, a leading defence and technology organisation, is hiring for a reputable company to support critical projects. We are seeking a skilled Network Engineer to contribute to the development and integration of the SERAPHIM networks service, supporting ongoing design, testing, and transition activities. What you''ll be doing:Design, implement, and troubleshoot complex network solutions, including hierarchical IP subnetting, routing protocols (OSPF, BGP), and advanced network infrastructure.Configure and manage Cisco Nexus, IOS XE devices, and VXLAN overlay networks.Support multi-service transport capabilities, ensuring secure distribution of information flows across multiple security domains.Develop and test network configurations, including Cisco routers, switches, firewalls, and virtual routers.Produce engineering documentation, test plans, and configuration templates.Assist with deployment activities at the clients location and support user test and trial operations. What you''ll bring:Demonstrable experience in network design, implementation, and troubleshooting, especially with core network technologies such as Cisco Nexus, IOS XE, VXLAN, DMVPN, and firewall solutions.Strong knowledge of routing protocols (OSPF, BGP), network security practices, and traffic management (QOS).Professional certification