Network Security Engineer - Palo Alto Gen Firewall; SC Cleared
Job in
Gloucester, Gloucestershire, GL1, England, UK
Listed on 2026-10-28
Listing for:
Saunders Scott
Full Time
position Listed on 2026-10-28
Job specializations:
-
IT/Tech
Cybersecurity, Network Security, IT Support, Systems Administrator
Job Description & How to Apply Below
Mid-level role within the Security Support team responsible for maintaining the availability, security, and operational health of the enterprise network security estate, focusing on firewalls and SASE services.
Key Responsibilities
* Operations & Service Management:
Support security infrastructure and firewalls following ITIL practices (incident, request, problem, change management).
* Incident & Issue Ownership:
Methodically triage, diagnose, remediate, and close incidents; escalate with evidence when needed.
* Change Delivery:
Translate requirements into support actions and execute controlled production changes with peer review, testing, and rollback plans.
* Problem Management:
Perform root-cause analysis on recurring issues and implement preventative solutions.
* Vendor & Team Coordination:
Manage technical escalations with vendors, MSPs, and internal cross-functional IT/security teams.
* Documentation & Governance:
Maintain configurations, asset records, runbooks, and diagrams; apply least-privilege principles and audit compliance in a regulated environment.
Technical Requirements
* Networking & Protocols:
Strong knowledge of TCP/IP, DNS, DHCP, NAT, TLS, HTTP/S, static/dynamic routing (BGP, OSPF), VRFs, and segmentation.
* Firewall & Security Administration:
Hands-on experience with enterprise NGFWs (policy, NAT, VPNs, security profiles) and lifecycle management (upgrades, patching, rule recertification).
* Troubleshooting:
Advanced diagnosis using PCAPs, logs, and monitoring tools for asymmetric routing, MTU, authentication, and application connectivity issues.
* Preferred Platforms:
Palo Alto / Fortinet (Panorama, Forti Manager, Forti Analyzer), SASE solutions, and F5 (or equivalent load balancers).
* Desirable: AWS/Azure networking, vulnerability management (Tenable), email security (Mimecast), basic scripting/automation (Python, Power Shell, APIs), and ITIL or vendor certifications (PCNSE, NSE, CCNA/CCNP).
Working Conditions
* Shift Rota:
Coverage between 08:00 and 18:00, with occasional out-of-hours maintenance as required.
* Clearance:
Security Check (SC) clearance required
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