DV-Cleared Lead Network Engineer — Secure, Onsite

Sanderson Government and Defence; Kingswood; On-site; GBP 111,000 - 166,000; Full time

Job summary

Sanderson Government and Defence in Salisbury is seeking an experienced Lead Network Engineer to secure and operate a critical network capability in a high‑assurance environment.

You will maintain routers, switches, firewalls, and cryptographic systems, deliver architectural enhancements, monitor performance, and provide guidance to delivery teams and stakeholders in a national security setting. DV clearance is essential; onsite work is required 3–4 days per week.

Qualifications

• Active DV Clearance
• Extensive network engineering experience in enterprise, defence, service provider, or data centre environments
• Strong Cisco networking expertise, ideally CCNP certified
• Firewall and network security experience, ideally with Palo Alto technologies and PCNSE certification
• Experience with network design, implementation, and project delivery
• Knowledge of routing, switching, firewalls, and secure network architectures
• Strong stakeholder engagement and communication skills

Responsibilities

• Maintain and support network infrastructure, including routers, switches, firewalls, and cryptographic systems
• Deliver network design changes and architectural enhancements
• Monitor network performance and proactively resolve issues
• Manage network security and perimeter defence controls
• Produce and maintain technical documentation
• Provide technical guidance to delivery teams and stakeholders

Skills

DV Clearance

Cisco Networking

CCNP

Firewall Security

Palo Alto

PCNSE

Network Design

Project Delivery

Routing & Switching

Stakeholder Engagement

Communication Skills

Job description

Sanderson Government and Defence in Salisbury is seeking an experienced Lead Network Engineer to secure and operate a critical network capability in a high‑assurance environment.

You will maintain routers, switches, firewalls, and cryptographic systems, deliver architectural enhancements, monitor performance, and provide guidance to delivery teams and stakeholders in a national security setting. DV clearance is essential; onsite work is required 3–4 days per week.