Senior Network Security Engineer

Role: Senior Network Security Engineer (L4)
Experience: 7+ years
Location: Guildford, UK
Work mode: Onsite

Key Responsibilities

• Security Infrastructure Operations & Engineering: manage, configure, and troubleshoot Cisco ISE (TACACS+, RADIUS, Dot1X, CoA, Profiling). Administer and support Cisco ASA/FTD firewalls including ACLs, NAT, VPN, failover, clustering, and upgrades. Manage Check Point firewalls (R80.x) – policy management, clustering, VPN, logging, and health checks. Handle F5 APM for remote access VPN, SSO, authentication policies, and application access. Support data centre network security architecture (firewalls, segmentation, VRF, routing, switching security).
• Implementation, Installations & Decommissioning: perform installation, configuration, and deployment of security devices (ASA/FTD, Check Point, ISE nodes, F5 APM). Lead hardware refresh, firewall replacement, and migration project...