We are seeking an experienced Senior Cisco Network Consultant to support a major security transformation programme for a leading UK engineering and defence organisation.
The successful candidate will play a key role in delivering a single, enterprise-wide Network Access Control solution across multiple UK locations, replacing existing NAC platforms and standardising access control policies across the business. This is a hands‑on technical delivery role requiring deep expertise in Cisco Identity Services Engine (ISE), network security, authentication services, and large‑scale enterprise infrastructure environments.
Key Responsibilities
* Lead the deployment, configuration and implementation of Cisco ISE solutions across multiple sites.
* Implement and migrate Network Access Control (NAC) services from existing platforms into Cisco ISE.
* Deliver the approved Low‑Level Design (LLD) and support technical implementation activities.
* Configure and manage authentication services including 802.1X (wired and wireless), MAC Authentication Bypass (MAB), Guest Access and Captive Portal services.
* Integrate Cisco ISE with Cisco Switching and Wireless Infrastructure, Active Directory, Microsoft Entra ID, Microsoft NPS and Firewalls/security services.
* Design and implement policy sets, profiling, posture assessment, and access control workflows.
* Perform testing and validation activities including Functional Testing, Failover Testing and User Acceptance Support.
* Troubleshoot complex authentication and network access issues during deployment and early life support phases.
* Work closely with network, security, and infrastructure teams to ensure successful delivery.
* Produce technical documentation, implementation guides, and operational procedures.
* Deliver knowledge transfer sessions and workshops to internal IT teams.
Essential Skills & Experience
* Strong hands‑on experience delivering multiple Cisco ISE implementations within enterprise environments.
* Proven experience migrating devices and services from existing NAC solutions.
* Deep understanding of Cisco ISE 3.x or later, 802.1X Authentication, MAB/RADIUS and TACACS+, Guest Access Services, High Availability and Multi‑Site Deployments.
* Experience integrating Cisco ISE with Active Directory, Entra ID, Microsoft NPS and Cisco Network Infrastructure.
* Strong troubleshooting and diagnostic skills across network access and authentication technologies.
* Cisco Certified Network Professional (CCNP) certification.
* CCNA with significant Cisco ISE implementation experience.
* Cisco Fire Jumper Field Engineer Certification.
Senior Cisco Network Consultant – Luton HQ (1–2 days a week with some travel to other UK sites). BPSS Eligible. Up to £65 p/h inside IR35.
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