Network Security Lead

London, UK/Hybrid 2-3 Days
Permanent

Job Description

We are seeking a candidate with a minimum of 8 years of experience for the position of Network Security Lead BPSS Compliant with strong expertise in enterprise and Campus networking, network security, cloud networking, and Software Defined Networks (SDN). The candidate will be responsible for leading network and security operations, managing complex enterprise environments, driving incident and change management, and ensuring compliance with organizational security standards, including BPSS-controlled environments.

Key Responsibilities

Network Security Lead BPSS Compliant

• BPSS Clearance Mandatory
• Lead and manage enterprise Network Security Operations across LAN, WAN, WLAN, SDWAN, Firewall, VPN, NAC, and Cloud environments
• Provide L3 technical SME support and act as the primary escalation point for critical incidents, outages, and complex troubleshooting
• Administer and support Palo Alto, FortiGate, Cisco FTD, and Meraki security platforms, including policy management, VPNs, upgrades, and security hardening
• Manage and troubleshoot Cisco Nexus, Aruba, Dell, and HP routing and switching infrastructure
• Support and maintain Wireless Networks using Cisco, Aruba, and Meraki wireless controllers and access points
• Implement and maintain Network Access Control (NAC) solutions, including Cisco ISE, 802.1X authentication, and MFA integrations
• Design, configure, and troubleshoot advanced networking technologies, including BGP, OSPF, EIGRP, VXLAN, EVPN, DMVPN, HSRP, GLBP, VPC, and IPsec VPNs
• Drive Incident, Change, Problem, and Service Request Management processes while ensuring adherence to operational SLAs
• Assess security vulnerabilities, review advisories, implement remediation plans, and ensure network security compliance
• Lead infrastructure upgrades, patching activities, and lifecycle management of network and security devices
• Develop operational documentation, SOPs, KT materials, and knowledge repositories
• Identify and implement automation opportunities using Python, PowerShell, or other automation tools to improve operational efficiency
• Mentor and guide network and security engineers, providing technical leadership and governance
• Ensure compliance with BPSS security requirements, access controls, audit standards, and customer security policies
• Participate in customer reviews, CAB meetings, technical governance forums, and stakeholder communications
• Provide support within a 24x7 operational environment, including on-call and major incident response activities