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

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.

• 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

• 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