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Network Security Engineer

United Kingdom, Portsmouth or Salisbury 45000.00 - 55000.00 GBP / Year · Job Posted April 02, 2026
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Job Description

Cyber Infrastructure Engineer – DV Environment. Join an established Cyber team on a major Defence site, working across security, infrastructure, and networks not just monitoring, but fixing and owning issues end-to-end.

Job Responsibility

  • Handle ServiceNow incidents & POI investigations
  • Own and maintain on-prem Splunk
  • Support 3rd/4th line network & security issues
  • Work across Windows, Linux, VMware, networks & security appliances

Requirements

  • Strong Splunk experience
  • 3rd/4th line network security background
  • Experience with firewalls, proxies, routers, DMZs
  • Solid Linux or Windows admin
  • Understanding of core protocols & RCA
  • DV clearance eligibility required

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