Network Security Engineer (NOC)

Fynity; Stevenage; On-site; GBP 46,000 - 55,000; Full time

Job summary

A leading network security firm in the United Kingdom is seeking a Network Security Engineer (NOC) to protect critical network infrastructure. This role involves supporting incident triage with the SOC, designing secure network solutions, and optimizing NOC tools in a fast-paced environment. The ideal candidate must hold active DV clearance and have a strong understanding of networking concepts and relevant technologies. This is a chance to make a tangible impact on network security and operational excellence.

Qualifications

• Strong understanding of TCP/IP, DNS, routing, switching, VLANs, and load balancing.
• Experience as a NOC or Network Security Engineer in a 24x7 setting.
• Hands-on with Cisco, Checkpoint, and Palo Alto firewalls.
• Familiar with IPS/IDS, SSL decryption, and deep packet inspection.
• Experience managing Bluecoat or F5 proxies.
• Knowledge of IPSec, SSL/TLS, VPNs, 2FA, and DMZ architectures.
• Comfortable with monitoring tools like PRTG or Nagios.

Responsibilities

• Support incident triage with the SOC.
• Design and implement secure network solutions.
• Collaborate across teams to identify vulnerabilities.
• Help optimize NOC tools and standardize network security platforms.

Skills

TCP/IP

DNS

Routing

Switching

VLANs

Load balancing

Cisco firewalls

Checkpoint firewalls

Palo Alto firewalls

IPS/IDS

SSL decryption

Deep packet inspection

Bluecoat proxies

F5 proxies

IPSec

SSL/TLS

VPNs

2FA

DMZ architectures

Monitoring tools (PRTG/Nagios)

Job description

Network Security Engineer (NOC)

Salary: Up to £55,000 + shift allowance + bonus

Security Clearance: Must hold active DV clearance.

Join a forward-thinking team as a Network Security Engineer (NOC), helping to protect and optimise critical network infrastructure. You'll work within a 24x7 ISR and NOC environment, ensuring network reliability while defending against evolving threats.

In this hands‑on Network Security Engineer role, you'll support incident triage with the SOC, design and implement secure network solutions, and collaborate across teams to identify vulnerabilities and improve performance. You'll also help optimise NOC tools and standardise network security platforms for greater resilience.

What you'll bring as a Network Security Engineer

• Strong understanding of TCP/IP, DNS, routing, switching, VLANs, and load balancing
• Experience as a NOC or Network Security Engineer in a 24x7 setting
• Hands‑on with Cisco, Checkpoint, and Palo Alto firewalls
• Familiar with IPS/IDS, SSL decryption, and deep packet inspection
• Experience managing Bluecoat or F5 proxies
• Knowledge of IPSec, SSL/TLS, VPNs, 2FA, and DMZ architectures
• Comfortable with monitoring tools like PRTG or Nagios

Desirable

• Experience with Darktrace, Splunk, or LogRhythm; packet capture analysis; SOC collaboration; and troubleshooting network flows

If you're a Network Security Engineer (NOC) who thrives in fast‑paced, complex environments, this is a great chance to make a tangible impact on network security and operational excellence.

If you are interested please apply ASAP. The People Network is an employment agency and will respond to all applicants within three - five working days. If you do not hear within these timescales please feel free to get in touch.