Cross Technology Managed Services Engineer; L3

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We are seeking an experienced Cross Technology Managed Services Engineer (L3) with strong expertise in enterprise networking technologies. The successful candidate will possess deep technical knowledge across Cisco networking, Cisco SD-WAN, Cisco Identity Services Engine (ISE), and Aruba networking solutions, with the ability to support and optimise complex customer environments within a managed services setting.

The engineer will serve as a senior technical resource responsible for resolving complex incidents, driving operational excellence, supporting network transformation initiatives, and mentoring junior engineers. This role requires an individual who combines broad networking expertise with a customer-centric mindset and a passion for continuous improvement.

• Administer, maintain, and optimise enterprise Cisco network environments.
• Manage complex routing and switching infrastructures across LAN, WAN, and Data Centre environments.
• Lead troubleshooting efforts for critical network outages and performance issues.
• Perform proactive health assessments and identify improvement opportunities.
• Ensure network availability, performance, and security standards are consistently maintained.

• Support and manage Cisco SD-WAN environments across customer estates.
• Troubleshoot overlay and underlay network connectivity issues.
• Implement and maintain SD-WAN policies, segmentation, and routing strategies.
• Support deployments, upgrades, migrations, and operational transitions.
• Optimise application and network performance across distributed environments.

• Administer Cisco Identity Services Engine (ISE) platforms.
• Support 802.1X authentication and network access control solutions.
• Troubleshoot authentication, authorisation, and policy-related incidents.
• Maintain role-based access controls and security policies.
• Assist with network segmentation and Zero Trust access initiatives.

• Support Aruba switching, wireless, and network management platforms.
• Manage Aruba Central and cloud-managed networking solutions where applicable.
• Troubleshoot wireless connectivity and performance issues.
• Support campus network infrastructure and access-layer technologies.
• Assist in network modernisation and wireless optimisation projects.

• Act as an L3 escalation point for complex networking incidents.
• Lead root cause analysis and problem management activities.
• Develop and maintain technical documentation, standards, and operational procedures.
• Mentor L1 and L2 engineers and contribute to knowledge sharing.
• Identify opportunities for automation and operational excellence.

• Participate in technical reviews, service improvement plans, and customer governance meetings.
• Provide technical guidance to project and transition teams.
• Support network transformation and infrastructure lifecycle projects.
• Build trusted relationships with customers and stakeholders.

• Cisco Routing and Switching
• OSPF, BGP and EIGRP
• VLAN Design and Network Segmentation
• High Availability Technologies
• Cisco Catalyst Platforms
• Cisco ISR and ASR Platforms
• Cisco Wireless Infrastructure

• Cisco SD-WAN (Viptela)
• WAN Optimisation
• Overlay Networking
• Application-Aware Routing
• Policy-Based Routing
• Transport and Segmentation Technologies