Infrastructure Engineer

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 a Senior Infrastructure Engineer, you will be responsible for delivering and managing secure LAN, WAN, and WLAN networks, acting as a key escalation point for troubleshooting, and providing mentoring to junior engineers. 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

• 5+ years in a Network Engineer or Infrastructure Engineer role
• Strong knowledge of TCP/IP, VLAN, VXLAN, EVPN, VPC, MLAG
• Deep experience with BGP, OSPF, EIGRP routing protocols
• Firewall configuration experience: Palo Alto, Cisco ASA, FortiGate
• VPN setup and support (IPSEC, remote access)
• Familiarity with Wireshark, SNMP, and monitoring tools
• Cross-platform support (Windows, Linux, macOS)
• Microsoft Active Directory design and maintenance experience
• Strong documentation, communication, and team leadership skills
• Desirable: CCNA/CCNP certifications
• Must be DV clearable If you're ready to work in a high-trust, high-security environment and bring your networking expertise to a forward-thinking organisation, click apply now to learn more.