Principal Network Engineer; Aruba ClearPass

Technology

Systems & Infrastructure

United Kingdom

Overview

Application

Date posted:
September 24, 2026

Contract

Full-time

Remote

Are you an Aruba specialist who thrives on solving complex networking challenges?

We're seeking an experienced Aruba specialist to lead the design and delivery of enterprise Aruba LAN, WLAN and Clear Pass solutions across complex customer environments. You will be our senior technical authority for HPE Aruba wired and wireless networking and network access control (NAC), covering design, architecture and delivery across the customer estate.

The role combines deep, hands-on Aruba specialism with strong core routing and switching skills, acting as the escalation point for the most complex Aruba engagements and a key technical contributor to pre-sales, solution design and Managed Services.

The role blends senior hands-on engineering with architecture, design authority and mentoring, with weighting shifting further toward architecture and enablement as the practice and estate grow.

This is a highly technical contract role suited to a senior consultant or principal engineer who enjoys owning architecture, design and delivery of complex Aruba solutions while acting as the escalation point for critical customer environments.

We’re looking for someone to start immediately.

• Own the design and delivery of Aruba CX switching (core, aggregation and access) and Aruba Wireless (AOS8/AOS
  10, Aruba Central) solutions across complex, multi-site customer estates.
• Produce HLD/LLD documentation, RF and capacity planning, and validated reference designs for LAN and WLAN deployments.

• Design and implement Aruba Clear Pass Policy Manager solutions, including 802.1X, guest access, device onboarding/profiling (OnBoard/OnGuard) and dynamic segmentation.
• Define NAC policy frameworks that integrate with identity, MDM and security platforms to support Zero Trust network access outcomes.
• Guide customers through NAC discovery, monitor mode and phased enforcement roll-outs, minimising business disruption.

• Apply strong routing and switching expertise (OSPF, BGP, EIGRP, VRRP/HSRP, STP, MPLS) to design resilient, scalable core and campus networks.
• Ensure Aruba solutions integrate cleanly into customers' wider, often multi-vendor, routing environments, including Cisco estates.
• Troubleshoot complex routing and Layer 2/3 issues across customer networks as a senior technical escalation point.

• Extensive experience (typically 5+ years) in network engineering, with significant specialisation in HPE Aruba wired and wireless networking, at a senior/principal level.
• Deep, hands‑on expertise with Aruba CX switching: VSX, core/aggregation/access design, and enterprise campus LAN architectures.
• Deep, hands‑on expertise with Aruba Wireless (AOS8/AOS
  10) and Aruba Central, including RF design, capacity planning and multi‑site management.
• Strong hands‑on expertise with Aruba Clear Pass Policy Manager: 802.1X, RADIUS/TACACS+, guest access, device onboarding/profiling (OnBoard/OnGuard) and dynamic segmentation.
• Ability to design and implement Zero Trust network access outcomes using NAC policy frameworks integrated with identity, MDM and security platforms.
• Excellent core routing and switching skills, including OSPF, BGP, EIGRP, STP/RSTP, VRRP/HSRP, VLANs and QoS.
• Strong multi‑vendor experience, particularly Cisco routing and switching, sufficient to design and troubleshoot in mixed‑vendor estates.
• Relevant HPE Aruba accreditations (e.g. Aruba Certified Switching Associate/Professional, Aruba Certified Mobility…