Senior Network Engineer

We are seeking a hands on, Cisco focused Network Engineer to support and enhance enterprise connectivity across LAN, WAN, VPN, wireless, and perimeter security. You will deliver complex network change, resolve high impact incidents, and work closely with stakeholders to keep services stable, secure, and resilient. This role often includes participation in an escalation rota for P1 incidents and customer facing support., You will design and deliver low level configurations, implementation plans, and method of procedure documentation for Cisco network changes, then execute upgrades, migrations, and cutovers with clear communications and rollback plans. You will operate, optimise, and support Cisco switching and routing across core and access layers, maintaining standards for VLANs, trunking, spanning tree, and high availability. You will build and support WAN and remote access services, including site connectivity, site to site VPN, and remote access VPN, ensuring service performance, availability, and resilience.

You will monitor network health, undertake proactive fault resolution, and contribute to capacity planning and performance improvements. You will troubleshoot complex incidents end to end, using structured diagnostics and packet capture where required, and you will provide clear stakeholder updates during outages and major incidents. You will produce and maintain technical documentation including network diagrams, runbooks, configuration standards, and change records. You will partner with security and operations teams to enforce policy, improve resilience, and ensure clean handover into business as usual support.

Technical skills and Cisco technology scope You will typically work with Cisco Catalyst switching across access and core, with exposure often spanning Catalyst 2000 and 9000 series and modular chassis platforms depending on the estate. Routing and WAN responsibilities may include BGP, OSPF, EIGRP, HSRP or VRRP concepts, QoS, and path resilience. Security often includes Cisco ASA and ASA with FirePOWER services, plus VPN technologies for site to site and remote access. Wireless may include Cisco WLAN controllers and access points depending on the environment.

Proven experience supporting and delivering Cisco networks in production environments, with strong capability in design, configuration, troubleshooting, and change delivery. Experience working within change control and maintenance windows, including clear communications, stakeholder management, and risk based planning. Ability to work independently while coordinating effectively with wider operational, security, and project teams. Confidence operating in customer facing environments and contributing during major incidents.

Certifications and desirable skills CCNA is expected as a baseline, with CCNP preferred. ITIL knowledge is beneficial in governance led environments. Scripting and automation using PowerShell or Python is advantageous for repetitive tasks, reporting, and configuration validation. Experience with monitoring and observability platforms is also valued.