Senior Infrastructure Engineer

Applause IT Recruitment Ltd; England; On-site; GBP 47,000 - 55,000; Full time

Job summary

A leading recruitment agency is seeking a Senior Infrastructure Engineer to manage secure LAN, WAN, and WLAN networks. The role requires expertise in routing protocols and firewall management, with a focus on maintaining high-trust environments. Candidates must have a minimum of 5 years of relevant experience and be eligible for DV clearance. This full-time position is based in East Birmingham.

Qualifications

• 5+ years in a Network Engineer or Infrastructure Engineer role.
• Strong knowledge of TCP/IP and networking protocols.
• Must be DV clearable.

Responsibilities

• Deploy and manage LAN, WAN, and WLAN networks.
• Troubleshoot complex networking issues.
• Document network configurations and monitor performance.

Skills

TCP/IP

VLAN

VXLAN

BGP

OSPF

EIGRP

Firewall configuration

VPN setup

Wireshark

Microsoft Active Directory

Education

CCNA/CCNP certifications

Tools

Palo Alto

Cisco ASA

FortiGate

Windows

Linux

macOS

Job description

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.

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, 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.