Network Security Engineer

Join a unique, multi‑national Information Management function that partners with governments and the Armed Forces to defend freedom and national sovereignty. As a Network Security Engineer, you'll play a vital role in safeguarding critical systems and network infrastructures as part of a 24x7 Internal Security Response team.

We're hiring a Network Security Engineer to join a unique, multinational Information Management function dedicated to supporting the Armed Forces and protecting national interests. This organization partners with governments to defend freedom and sovereignty, working at the cutting edge of technological security. If you're passionate about cyber defence, thrive in fast‑paced environments, and love solving complex technical problems, this is the place for you.

• Build and optimise network security solutions (think next‑gen firewalls, proxies, monitoring tools).
• Work hands‑on with Cisco, Checkpoint, Palo Alto, Bluecoat, F5 and more.
• Triage and respond to SOC alerts, collaborating closely with our analysts.
• Identify vulnerabilities and drive improvements based on Purple Team testing.
• Champion best practice and compliance across our network estate.

• Solid networking principles: TCP/IP, DNS, VLANs, Switching, Load Balancing.
• Real‑world experience with firewalls, proxies, SSL inspection, IPS/IDS, VPNs.
• Strong analytical skills – able to interpret packet captures, root‑cause analysis, and more.
• Familiarity with tools like Darktrace Antigena, Splunk ES, Log Rhythm is a plus.

Contract Type:
Permanent

Specialism:
Technology & Digital

Focus:
Information Security

Industry: IT

Salary: £50,000 - £60,000 per annum + £8k shift allowance + Bonus + Bens

Workplace Type:
Hybrid

Experience Level: Senior Management

Location:

Stevenage

Full Time

Job Reference: XU1V8N-321B10CF

Date posted: 10 December 2025