Salary: £39,000 - 72,500 per year Requirements: Strong hands-on experience with Extreme Networks and Juniper technologies Proven background in network support, administration, and troubleshooting Solid understanding of routing and switching protocols (e.g. BGP, OSPF, VLANs, STP) Experience with network monitoring and management tools Ability to diagnose and resolve issues in high-pressure environments Excellent communication and documentation skills Must hold active SC Clearance Experience working in secure or government environments (desirable) Exposure to firewall technologies and network security principles (desirable) Relevant certifications (e.g. JNCIA/JNCIS, Extreme certifications, CCNA/CCNP) (desirable) Responsibilities: Manage and support the day-to-day operation of the network infrastructure Monitor network performance, availability, and capacity using appropriate toolsets Respond to and resolve incidents, service requests, and escalations within agreed SLAs Perform proactive maintenance, patching, and upgrades across network devices Troubleshoot complex network issues across LAN, WAN, and data centre environments Work closely with internal teams and stakeholders to ensure network reliability and performance Maintain accurate documentation of network configurations, processes, and changes Technologies: Firewall Support LAN Network Security More: We are seeking a highly skilled and security-cleared Network Engineer to support and maintain a complex enterprise network environment. This role is ideal for an experienced professional with strong hands-on expertise in Extreme and Juniper technologies, who thrives in operational support and troubleshooting scenarios. We offer a collaborative team environment with opportunities for professional growth and development. last updated 16 week of 2026