Senior Network Operations Support Engineer – freelance – hybrid, London, UK

Reports to Head of Data Centre and Network Services.

Responsibilities

• Provide 24/7 operational support, leading incident response, root cause analysis, and permanent remediation across enterprise and data centre networks.
• Troubleshoot complex L2–L7 issues across routing, switching, Palo Alto/ Fortinet firewalls, Cisco ACI, and hybrid cloud connectivity.
• Manage network and firewall changes end-to-end, including risk assessment, rollback planning, and documentation.
• Monitor and optimise network health, capacity, and performance; drive continuous improvement of tooling, dashboards, and automation.
• Collaborate with engineering, architecture, and cybersecurity teams to support new deployments and enforce security standards.
• Maintain operational documentation, ensure regulatory compliance, and report on availability metrics and KPIs.
• Coordinate with vendors, telcos, and internal stakeholders on fault resolution and SLA management.

Requirements

• 8–12+ years in enterprise/data centre network operations.
• Strong L2–L7 troubleshooting skills: BGP, OSPF, EIGRP, QoS, WAN, MPLS, SD-WAN.
• Hands-on experience with Cisco ACI, Palo Alto (Panorama), and Fortinet (FortiManager/FortiAnalyzer).
• Python and Ansible automation skills for operational workflows and API-driven tasks.
• Familiarity with AWS/Azure networking and hybrid cloud environments.
• Experience in regulated industries with strong change governance and compliance practices.
• Clear communicator with solid documentation and cross-team collaboration skills.

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