Senior Network Engineer

Job Title: Senior Network Engineer (Network & Security Operations)

Location: Home-Based (UK)

Salary: £45,000 + Benefits

We are seeking an experienced Senior Network Engineer to join a growing network operations team, providing senior-level support across complex enterprise network and security environments. This role is focused on BAU support, troubleshooting, and operational stability, supporting critical customer infrastructure in a home-based capacity.

You will act as a senior escalation point within the team, supporting secure, resilient LAN, WLAN, and network security platforms, while helping to drive service quality and continuous improvement.

As a senior network engineer within the network operations function, you’ll be responsible for maintaining, supporting, and optimising live enterprise networks and security platforms.

Key responsibilities include:

• Providing 3rd-line support and escalation for complex network and security incidents
• Supporting and maintaining Cisco Security technologies, including ASA, FirePOWER, FTD & FMC, Cisco ISE (NAC, identity and policy enforcement), Cisco Umbrella and Cisco DNA Center (DNAC)
• Supporting enterprise LAN environments (Cisco Catalyst switching)
• Supporting and troubleshooting enterprise WLAN environments, including controllers and access points
• Diagnosing issues across routing, switching, wireless and security domains
• Performing configuration changes, upgrades, patching and routine maintenance
• Monitoring network performance, availability and security posture
• Creating and maintaining operational documentation, runbooks and knowledge articles
• Providing technical guidance and mentorship to junior engineers

• 5+ years’ experience supporting enterprise network and security environments
• Strong hands-on experience with Cisco Security platforms (ASA, FirePOWER, FTD, FMC, ISE, Umbrella)
• Strong enterprise networking experience across LAN and routing / switching
• Proven experience supporting enterprise wireless (WLAN) environments
• Experience operating as a senior / 3rd-line engineer
• Excellent troubleshooting and problem-solving skills

• Experience supporting SD-WAN environments
• Exposure to network monitoring and management tools
• Cisco certifications (CCNP Enterprise, CCNP Security or equivalent)
• Experience with in managed services or enterprise operations teams

You’ll be joining a collaborative, operations-focused team responsible for mission‑critical enterprise networks, working with modern Cisco networking and security technologies. The role offers long‑term technical growth, stability, and the flexibility of a fully home‑based position.

JOB : #3504811