Key Responsibilities: Build and deploy the required network infrastructure, ensuring readiness for ongoing support. Manage and troubleshoot secure development and reference environments. Design, administer, and maintain Corporate, Secure, and Development networks. Create and maintain firewall rule sets to safeguard network integrity. Handle IP switching and routing, subnetting, and VLAN configurations. Configure and maintain Palo Alto firewalls, Cisco & Aruba switches, and Aruba Wi-Fi. Enterprise-grade encryption devices. Diagnose and resolve complex network issues effectively. Job Requirements: Experience with Palo Alto Firewalls, Fortinet Firewalls, Cisco and Aruba switches, and Wi-Fi. Understanding of network protocols, including IP switching, routing, subnetting, and VLANs. Hands-on experience with Cisco technologies and Cisco CMNA certification. Desirable Skills & Knowledge: Experience in Network Architecture. Knowledge of Software Defined Networking (SDN) technologies. ZTN (Zero Trust Networks). Posture checking and isolation. Port Authorisation Authentication (802.1x) Aruba/Fortinet. Palo Alto Networks - Firewalls (On-prem perimeter and Cloud based appliances). Secure Proxy systems - Palo Alto Prisma (or others). MFA (RSA SecurID or similar hard/soft token systems). On-prem and Cloud security principles. Secure-by-design methodology. NIST 800-171 (CMMC CUI). Certifications: PCNSE - Palo Alto Certified Network Security Expert preferred (or working towards). Benefits: Opportunity to work on advanced technologies in the defence sector. Dynamic and innovative work environment. Competitive salary and benefits package. If you are an experienced Senior Network Engineer looking for a new opportunity to further develop your career within the Defence and Security industry, we would love to hear from you. Apply now to join our client's dynamic team.