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

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

Contract | Comgent | United Kingdom

Posted On 04/21/2026

Job Information

Standard Business working Hours Yes

Work Experience 8-10

City London

State/Province City of London

N/A

Special Considerations

We are committed to building an inclusive workplace and encourage applications from women and other under-represented groups in tech. All qualified candidates are welcome.

Start date: May/ June 2026

Location: London, UK (Hybrid — minimum 2 days per week in office)

Job Description

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.

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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