Senior Network Engineer (L5) Location: Hereford Salary: £60k - £70k p/aOverviewThorn SDS is a specialist Managed Service Provider based in Alton, Hampshire. We empower technology professionals and organisations across the Space, Defence, and Security sectors - and now, we''re growing our team with a Senior Network Engineer who''s ready to make an impact.This is a full-time, on-site role (5 days per week) at a secure location in Hereford. You''ll be operating at SFIA Level 5, shaping and supporting mission-critical network infrastructure in highly specialised environments.Security ClearanceDue to the nature of the work, you must hold or be eligible to obtain a high level of National Security Clearance. (See: (url removed) United Kingdom Security Vetting)Some UK travel with overnight stays may be required.What You''ll Be DoingYou''ll own and optimise complex network environments, getting hands-on across a wide range of technologies and responsibilities, including:Configuring and managing routers, switches, and routing protocolsDesigning VLANs, network segmentation, and virtualised network environmentsDelivering cloud networking solutions and network automationProducing detailed network designs, configs, and performance reportsMonitoring and improving network performance with the right tools and processesTroubleshooting implementation issues and supporting end users in test environmentsDeploying infrastructure through later delivery phasesContributing to PI (Program Increment) p