Overview
Senior Infrastructure Engineer - Network Infrastructure | Firewalls | DV Clearable | On-Site. Location: East Birmingham (Full-Time, On-Site). Salary: £47,000 - £55,000 + 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 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.
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, 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
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