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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # lead network engineer (active bpss clearance). - **Company:** Randstad UK - **Location:** London, UK - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** IEEE 802.1X, Wireless LAN, Border Gateway Protocol, Cloud Computing, Cyber Security, Enhanced Interior Gateway Routing Protocol, Internet Protocol Security (IP SEC), Virtual Private Networks (VPN), Python (Programming Language), Network Security, Routing, Network Protocols, Cisco Nexus Switches, Open Shortest Path First (OSPF), Overlay Transport Virtualization, Windows PowerShell, Systems Integration, Wide Area Networks, Identity Services Engine, Network Access Control, Computer Network Operations, Cloud Platform System, Infrastructure Automation Frameworks, SDN Network, Palo Alto Networks, Fortinet, Open Network Automation Platform, Cisco - **Published:** July 28, 2026 - **Apply:** https://www.randstad.co.uk/jobs/apply/47205539/ ## About the Role * Clearance: Active BPSS (Baseline Personnel Security Standard) Clearance is absolutely mandatory. * Experience: A minimum of 8 years in complex enterprise networking and security operations. * Mandatory Tech Skill: Deep, proven expertise in Cisco SDN (Software-Defined Networking) Administration. * Security & Identity: Hands-on experience with Network Access Control (Cisco ISE, 802.1X) and MFA integrations. * Advanced Routing: Deep knowledge of networking protocols and overlays including BGP, OSPF, EIGRP, VXLAN, EVPN, and IPsec VPNs. * Automation: Practical experience utilizing Python or PowerShell for network automation. ## Description About the Role We are partnering with a highly secure, enterprise-level organization to find a Network Security Lead to take ownership of their complex infrastructure. In this role, you will act as the ultimate technical escalation point (L3/SME) for a large-scale campus and cloud networking environment. You will bridge the gap between network operations and security, driving incident resolution, lifecycle management, and infrastructure automation while ensuring strict adherence to BPSS and organizational security standards. What You Will Do * Lead Operations: Direct network and security operations across enterprise LAN, WAN, WLAN, SD-WAN, and Cloud environments. * Act as the L3 SME: Serve as the primary escalation point for critical outages, complex troubleshooting, and major incident response (including 24x7 on-call escalations). * Secure the Perimeter: Administer, harden, and upgrade heavy-duty security platforms including Palo Alto, FortiGate, Cisco FTD, and Meraki. * Manage Infrastructure: Oversee routing, switching, and wireless environments using Cisco Nexus, Aruba, Dell, HP, and Meraki hardware. * Drive Automation: Identify operational bottlenecks and build Python or PowerShell scripts to automate repetitive tasks and improve efficiency. * Govern & Mentor: Lead technical governance, participate in CAB meetings, and mentor a team of network and security engineers. ## Related Videos - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [WeAreDevelopers LIVE - Back to CODE100](https://www.wearedevelopers.com/videos/1909-wearedevelopers-live-back-to-code100) - [Creating a routing app with Google Maps API from scratch](https://www.wearedevelopers.com/videos/831-creating-a-routing-app-with-google-maps-api-from-scratch) - [Your Infrastructure Is Not a Playground: AI Agents for Infra Done Right](https://www.wearedevelopers.com/videos/2084-your-infrastructure-is-not-a-playground-ai-agents-for-infra-done-right) - [Small, Secure, Interconnected: The next Internet Protocol](https://www.wearedevelopers.com/videos/100062-small-secure-interconnected-the-next-internet-protocol) - [A Technical Introduction to Bitcoin's 2nd Layer- The Lightning Network](https://www.wearedevelopers.com/videos/15-a-technical-introduction-to-bitcoin-s-2nd-layer-the-lightning-network) ## Related Articles - [Best Companies to work for in London: Top 25 Companies in 2023](https://www.wearedevelopers.com/magazine/187-best-companies-to-work-for-in-london-top-25-companies-in-2023) - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [Is Software Engineering Over-Saturated?](https://www.wearedevelopers.com/magazine/418-is-software-engineering-over-saturated) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [The Best Job Search Websites of 2025](https://www.wearedevelopers.com/magazine/368-the-best-job-search-websites-of-2025) - [Best Companies in the Netherlands: Top 25 Companies in 2023 ](https://www.wearedevelopers.com/magazine/193-best-companies-in-the-netherlands-top-25-companies-in-2023)