Senior Network Operations Support Engineer - freelance - hybrid, London, UK
Comgent · Greater London, England, United Kingdom
IT Services and IT Consulting · 11-50 employees
Apr 21
Principal (10+ yrs)
Contractor
United Kingdom
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About the role
Provide 24/7 operational support for enterprise and data center networks, including incident response and root cause analysis. Manage network changes, monitor performance, and collaborate with engineering and security teams to ensure compliance and system health.
What they look for
Network Operations
Incident Response
Root Cause Analysis
Routing
Switching
Palo Alto
Fortinet
Cisco ACI
Hybrid Cloud
BGP
OSPF
SD-WAN
Python
Ansible
Change Governance
Compliance
Requirements
Requires 8–12+ years of experience in enterprise network operations with deep expertise in L2–L7 troubleshooting and network protocols. Proficiency in automation tools like Python and Ansible, along with experience in Cisco ACI and hybrid cloud environments, is essential.
Full 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.
- 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.
