eDV Network Security Consultant

eDV Network Security Architect/Senior Network Engineer

• Location: West (100% onsite)
• Clearance: Active UK eDV (Enhanced Developed Vetting) required
• Sector: UK Defence/National Security
• Type: Contract or Perm (depending on candidate)
• Day Rate or Salary: Contact Me for info

Role overview:

We are looking for an eDV-cleared Network Security Architect/Senior Network Engineer to design, build, configure and support secure network infrastructure in a mission-critical environment. This role suits someone comfortable working hands-on across LAN/WAN, data centre networking, multi-vendor security controls, and secure site rollouts, with strong documentation capability (HLD/LLD) and confident troubleshooting.

Key responsibilities:

• Design & implementation of secure LAN/WAN and data centre network solutions.
• Hands-on build/configuration of network and security devices (Routers, Switches, Firewalls).
• Delivery of HLD/LLD, network diagrams/topologies, and implementation/transition documentation.
• Secure site delivery: onsite deployments, device swap-outs, "plug-and-play" installs, and upgrade/migration support.
• Work across SDN/virtualised networking (eg, VMware NSX-T) including security controls and integration.
• Support for DC architectures and modern fabrics (eg, EVPN-VXLAN), plus load balancing where required.
• Network security operations: Firewall rule changes, access-list management, port openings, and security hardening.
• Monitoring/visibility and troubleshooting across enterprise environments (eg, PRTG, SolarWinds or similar).
• Collaboration with stakeholders, regular progress updates, and delivery of project reporting.
• Strong incident/problem resolution across network and system-related faults in secure environments.
• Contribute to security improvement initiatives (eg, controlled testing environments, IPS management).

Required skills & experience (must-have):

• Active eDV clearance (current and transferable).
• Proven experience delivering secure networks in defence/government/high-security environments.
• Strong routing/switching background across enterprise networks:
• Cisco enterprise (eg, Catalyst) and/or Juniper (EX/SRX) experience.
• Strong Firewall/security experience in multi-vendor environments, such as:
• Cisco FTD, Palo Alto, Juniper SRX, Fortinet, Check Point (any combination acceptable).
• Solid understanding of secure access controls and enterprise authentication:
• 802.1X and ideally Cisco ISE.
• Confident producing and maintaining:
• HLD/LLD, topology diagrams, implementation plans, transition/migration documentation.
• Excellent troubleshooting skills across WAN/LAN/DC connectivity and security policy impacts.

Desirable (nice-to-have):

• NSX-T (design/implementation/operations) and/or broader SDN exposure.
• Data centre technologies such as EVPN-VXLAN and modern fabric switching concepts.
• MPLS design/implementation and underlay routing exposure (eg, EIGRP).
• Load balancing experience (eg, F5 or equivalent).
• Experience with crypto devices/secure communications tooling (project dependent).
• Agile delivery experience in infrastructure/network programmes.

Why this role:

• High-impact work in a secure environment with meaningful, hands-on delivery.
• A mix of architecture, engineering, and onsite implementation (not a "paper-only" design role).
• Strong alignment for candidates who enjoy multi-vendor, project-based secure network delivery.

If interested, please send me your most recent CV and phone number so we can speak in more detail about the role!