Infrastructure Engineer - Network Infrastructure | Firewalls | DV Clearable | On-Site Location: East Birmingham (Full-Time, On-Site) Salary: £40,000 - £47,000 + Benefits Are you an experienced Infrastructure Engineer with strong networking expertise and a background in secure environments? This is a full-time, on-site role based in Marston Green, Birmingham, offering the opportunity to support mission-critical IT infrastructure within a security-sensitive organisation. As an Infrastructure Engineer, you will be responsible for delivering and managing secure LAN, WAN, and WLAN networks. Candidates must be eligible for DV (Developed Vetting) clearance - British nationals with long-term UK residency only. Key Responsibilities: Deploy and manage LAN, WAN, and WLAN networks for secure enterprise environments Troubleshoot complex Layer 2 and Layer 3 networking issues Document network topologies and configurations Monitor and enhance performance across network infrastructure Install and maintain firewalls - Palo Alto, Cisco ASA (AnyConnect), FortiGate Manage VPNs, IPSEC tunnels, and certificate-based authentication Contribute to AD design and secure environment management Mentor junior staff and act as a key escalation point Participate in incident response and root cause analysis Required Skills & Experience: 5+ years in a Network Engineer or Infrastructure Engineer role Strong knowledge of TCP/IP, VLAN, VXLAN, ...