Senior IT Network & Infrastructure Engineer

We’re supporting a forward‑thinking organisation in Pembrokeshire as they look to hire a Senior IT Network & Infrastructure Engineer to take ownership of their enterprise network environment. This is a hands‑on, senior technical role where you’ll design, build, and optimise a modern, secure, high‑availability network across a large and diverse infrastructure. If you’re an experienced network professional who enjoys solving complex problems, leading improvements, and working with a wide range of technologies, this is an excellent opportunity to join a growing team at a state‑of‑the‑art facility. As the Senior IT Network & Infrastructure Engineer, you will: Design, implement, and maintain enterprise‑level network architecture (LAN, WAN, WLAN, VPN) Ensure high availability, performance, and scalability of network services Troubleshoot and resolve complex network issues across multiple environments Configure and manage routers, switches, firewalls, and load balancers Lead network upgrades, migrations, and infrastructure improvement projects Implement secure remote access solutions (VPN, IPsec, SSL/TLS, SSH) Enforce network security best practices, including firewall rules, IDS/IPS, encryption, and PKI Monitor network performance, capacity, and security using appropriate tools Support disaster recovery and business continuity planning Manage patching, updates, and configuration backups Produce clear documentation for network configurations and DR procedures Provide technical guidance and mentoring to junior engineers Participate in on‑call support and incident response when required We’re looking for someone who brings: Proven experience designing and managing large‑scale enterprise networks Strong understanding of routing and core protocols (TCP/IP, DNS, DHCP, NFS) Solid background in network security (firewalls, VPNs, encryption standards) Hands‑on experience with virtualisation platforms such as VMware vSphere Familiarity with containerisation technologies (advantageous) Good knowledge of Windows Server environments Certifications such as CCNP, CCIE, JNCIP or equivalent (highly desirable) Experience working within structured IT environments (ITIL beneficial) A proactive, solutions‑focused approach and strong communication skills This role is ideal for a dedicated professional who wants to apply their expertise within a modern, technology‑driven organisation.  Please note, this is an on‑site role based at a modern, well‑equipped facility in Pembrokeshire