> Markdown version of [/jobs/ext/4553189-network-security-lead](https://www.wearedevelopers.com/jobs/ext/4553189-network-security-lead). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Network Security Lead - **Company:** Randstad UK - **Location:** London, UK - **Experience:** Expert - **Salary:** £70,000.0 - £80,000.0 - **Contract:** Permanent contract - **Skills:** Border Gateway Protocol, Data Centers, Internet Protocol Security (IP SEC), Virtual Private Networks (VPN), Python (Programming Language), Network Security, Network Protocols, Cisco Nexus Switches, Open Shortest Path First (OSPF), Overlay Transport Virtualization, Windows PowerShell, Wide Area Networks, Network Routers, Computer Networking Systems, Identity Services Engine, Firewalls (Computer Science), Palo Alto Networks, Fortinet, Routing & Switching, Cisco - **Published:** November 4, 2026 - **Apply:** https://www.cv-library.co.uk/job/225798048/Network-Security-Lead ## About the Role We are hiring an L3 Subject Matter Expert to lead network security operations for a global enterprise. If you have 8+ years of experience managing complex enterprise networks and thrive in a technical leadership role handling major incident response, we want to hear from you., * Routing & Switching: Mandatory deep expertise in Cisco Data Centre and Branch Routers/Switches (Nexus). * Security & Firewalls: Strong hands-on experience with Palo Alto, FortiGate, Cisco FTD, and Cisco ISE (NAC). * Network Protocols: Advanced knowledge of BGP, OSPF, VXLAN, EVPN, and IPsec VPNs. * Wireless & SD-WAN: Experience supporting Cisco, Aruba, and Meraki environments. * Automation (Bonus): Python or PowerShell scripting for operational efficiency.