Network Engineer

Network Engineer Location: Luton (approx. 20% onsite) Duration: 6 months Rate: £66.97 per hour (Umbrella) IR35: Inside Clearance: BPSS is required ahead of starting Overview Seeking 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 & 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 security events * Knowledge transfer: Workshops or training sessions for IT teams.Skillset/experience required: Strong hands-on Cisco ISE (3.x or later) experience (incl. multiple implementations and transition of devices/services) * High availability across multiple sites * 802.1X for wired and wireless networks + MAC Authentication Bypass (MAB) * Guest access with customizable workflows * Integration with existing Cisco network infrastructure * Knowledge of Microsoft NPS * Preferably CCNP (or CCNA with extensive Cisco ISE experience) * Cisco Fire Jumper Field Engineer Certification (preferred) * Experience with multisite enterprise environments * Able to pass BPSS