Salary: £143,000 - 143,000 per year Requirements: Must have an Active DV Clearance. Strong experience designing secure enterprise networks using Cisco, Juniper, and Gigamon technologies. Knowledge of routing protocols, VRFs, VPNs, QoS, security zones, high availability, and IP addressing design. Skilled in troubleshooting and resolving defects across multi-vendor technologies. Experience in overseas infrastructure delivery is essential. Understanding of requirements management and lifecycle processes. Excellent communication skills with the ability to share knowledge, take ownership, and support delivery teams. Responsibilities: In this role as a Network Architect, I work closely with Programme and Project Managers to produce high-quality network designs across various programs, live services, and change activities. I contribute to HLD and LLD documentation for key technologies such as Cisco FMC, SSM, FTD, Gigamon HC1 and GigaVUE FM, Juniper LAN and WAN, Endace, NTP, data center firewalls, and LAN services. My responsibilities include supporting engineering teams to ensure our solutions meet requirements, pass governance, and align with architectural direction. I also provide design input for customer reporting and collaborate with senior technical leadership to maintain architectural consistency. Technologies: Architect Cisco Support LAN Network Security More: This new opportunity allows me to shape the delivery of secure and resilient networks as a Network Architect. Joining our secure Defence and National Security programme means engaging with technical and project stakeholders in a high-profile environment while designing and delivering medium to large-scale network solutions. last updated 10 week of 2026