Network Engineer Location: Luton (approx. 20% onsite) Duration: 6 months Rate: 66.97 per hour (Umbrella) IR35: Inside Clearance: BPSS is required ahead of startingOverviewSeeking a Network Engineer to deliver a single, unified Network Access Control (NAC) solution to support multiple UK sites. You''ll support the configuration, testing and go-live of Cisco ISE hardware appliances, lead logical policy configuration, and migrate services from existing NAC solutions, implementing an approved low-level design.Responsibilities:Lead the deployment, configuration, and implementation of Cisco ISE solutions across enterprise environments Implement network access control (NAC) policies, including 802.1X authentication, MAB, and guest access workflows Integrate Cisco ISE with network infrastructure components such as switches, wireless controllers, firewalls, Entra ID and Active Directory Testing and validation: Functional testing, failover testing, and acceptance criteria. Troubleshoot complex network access and authentication issues as part of early life support Guest access implementation: Captive portal, onboarding workflow, and sponsor portal setup. Collaborate with security teams to enforce compliance and security policies Develop and maintain technical documentation, including design diagrams and security operation procedures Provide on-site and remote support during deployment phases and post-implementation Participate in incident response and root cause analysis for network se