Network Security Engineer

Robert Walters; Stevenage; On-site; GBP 45,000 - 50,000; Full time

Job summary

A multinational technology organization in Stevenage is hiring a Network Security Engineer to safeguard critical systems and network infrastructures. This role involves optimizing security solutions and responding to security incidents. Strong networking principles and experience with various security tools are essential. The position offers a permanent contract with an annual salary of £45,000 - £50,000 plus shift allowance and benefits.

Benefits

Shift allowance

Bonus

Benefits

Responsibilities

• Build and optimise network security solutions.
• Work hands-on with various security tools.
• Triage and respond to SOC alerts.
• Identify vulnerabilities and drive improvements.
• Champion best practice and compliance across our network estate.

Skills

Solid networking principles: TCP/IP, DNS, VLANs, Switching, Load Balancing

Real-world experience with firewalls, proxies, SSL inspection, IPS/IDS, VPNs

Strong analytical skills: interpreting packet captures, root cause analysis

Familiarity with tools like Darktrace Antigena, Splunk ES, Log Rhythm

Tools

Cisco

Checkpoint

Palo Alto

Bluecoat

F5

Job description

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.

You’ll play a critical role as part of a 24x7 Internal Security Response team, helping safeguard our organization’s network infrastructure and respond to security incidents. When you’re not collaborating with SOC experts, you’ll design and maintain robust security solutions, protecting us against ever-evolving threats.

What you’ll do:

• 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.

We’re looking for:

• 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.

About the job

• Contract Type: Permanent
• Specialism: Technology & Digital
• Focus: Infrastructure
• Industry: IT
• Salary: £45,000 - £50,000 per annum + £8k shift allowance + Bonus + Bens
• Workplace Type: On-site
• Experience Level: Associate
• Language: English - Professional working
• Location: Stevenage
• Job Reference: PLWJW1-EE6EDCEB
• Date posted: 30 October 2025

Robert Walters Operations Limited is an employment business and employment agency and welcomes applications from all candidates.