Network Engineer

The Network Engineering Service designs, builds and validates the core physical and virtual networks powering a secure, multi‑site platform. The role covers formal design work, system testing and resolving complex network issues alongside Service Management. Key Responsibilities - Engineer and validate secure multi‑site network components. - Produce and review HLDs, LLDs, implementation guides and config standards. - Design and manage hierarchical IP subnetting. - Configure and troubleshoot OSPF, BGP and enterprise routing. - Deploy and maintain routers, switches and firewalls. * Implement and support: * Cisco Nexus * Cisco IOS XE * Leaf‑and‑Spine architectures * VXLAN overlays * Dual‑Cloud Dual‑Hub DMVPN * Firewall IPS/IDS * AAA platforms (ISE) * Configure TRL crypto devices and manage key material. * Design and optimise QoS (shaping, policing, scheduling, congestion control). * Support system testing and resolve network incidents. Essential Skills & Experience * 3+ years’ hands‑on experience with: * IP subnetting * OSPF/BGP * Enterprise routing, switching and firewalls * Cisco Nexus & IOS XE * Leaf‑and‑Spine * VXLAN * Dual‑Hub DMVPN * IPS/IDS * AAA/ISE * TRL crypto & key management * Full QoS configuration * Recent professional certification (CCNP, VCP‑NV). * Strong communication, analytical and problem‑solving skills. * Active SC clearance. * Competent with Microsoft Office. Desirable -Experience in secure/regulated public‑sector environments. -Defence network and secure gateway support. -Delivery of accredited secure solutions. -Agile/Waterfall delivery experience. -Exposure to large‑scale virtualisation. -JIRA/Confluence familiarity. -Relevant technical degree. -Secure multi‑tenant architecture design. -Chartered Engineer or working toward it. Role Details Job Type: Full‑time, Permanent Salary: £50,000–£70,000 Benefits: Additional leave, pension, employee discount, hybrid working Location:Corsham (Wiltshire), hybrid remote