GTC Recruitment

Network & Firewall Specialist Location: Aldermaston (100% onsite) Contract: 12 months IR35: In Scope Rate: 44.99/hr Umbrella Clearance: Active DV required (Sole UK Nationals only) Overview We are seeking experienced Network & Firewall Specialists to join a secure environment. This hands-on role involves installing, configuring, and troubleshooting network devices, with a focus on Juniper technologies, network security, and high-availability infrastructure. Key Requirements Strong Juniper experience (EX, QFX, SRX / vSRX) Experience installing switches and firewalls Solid networking knowledge ( OSPF, BGP, WAN/LAN design, clustering ) Experience with EVPN/VXLAN, VRFs, GRE tunnels Familiarity with PKI / certificate management Technical background Responsibilities Monitor network performance and manage incidents Troubleshoot and resolve network issues Support capacity and availability planning Work with stakeholders and third parties Produce Low-Level Designs (LLDs) Provision and configure network devices Additional Info Participation in on-call rota; occasional evenings/weekends Travel to remote sites may be required (including overnight stays) 1-stage MS Teams interview