Salary: £43,500 - 66,500 per year Requirements: Strong Palo Alto firewall experience Solid networking background, including Cisco and LAN/WAN Exposure to security tools such as SIEM, EDR, and vulnerability management Experience in enterprise or regulated environments is ideal Responsibilities: Own and optimise our Palo Alto firewall estate Support our LAN/WAN, Wi-Fi, remote access, and load balancing environments Monitor and respond to security incidents using SIEM and EDR tools Improve our network security, segmentation, and resilience Manage vulnerability scanning and patching using Qualys Lead and contribute to our security and infrastructure projects Technologies: Cisco Firewall Support LAN Load Balancing Network Security Aruba More: We are hiring a Senior Network Security Engineer for a busy, engineering-led role within a well-established financial services environment near Epsom. This is a hybrid position with two days onsite, offering permanent employment, on-call involvement, and occasional out-of-hours support. You will have real ownership of our network security estate and the opportunity to help modernise and strengthen our infrastructure through transformation projects, with strong progression, training, competitive salary, and benefits. last updated 24 week of 2026