Senior Network Support Engineer | Cisco

You’ll join a specialist third line faults team as the primary escalation point for complex data network service issues. Your work centres on diagnosing and resolving faults across large-scale enterprise WAN environments - including MPLS and SD-WAN, using advanced tooling and deep technical knowledge. You’ll collaborate across technical teams, liaise with senior management to communicate findings, and contribute to continuous service improvement.

This isn’t a passive support role. You’ll proactively identify fault patterns, stay ahead of developments across Cisco, Palo Alto, Fortinet, Aruba, and Juniper platforms, and take ownership of driving service quality in a high-stakes environment. Career progression and internal visibility are genuine and built into the fabric of this team., * Resolve third line data network faults within agreed SLAs as the primary technical escalation point

• Diagnose and troubleshoot complex network issues using advanced diagnostic tools and deep domain expertise
• Maintain expert-level knowledge of enterprise WAN architectures including MPLS and SD-WAN
• Collaborate with service desk and engineering teams to elevate and close incidents effectively
• Liaise with senior management to communicate technical findings and support service improvement initiatives
• Stay current with emerging WAN technologies and vendor developments across Cisco, Palo Alto, Fortinet, Aruba, and Juniper
• Maintain compliance with security protocols and fulfil SC clearance and PPV3 requirements

** Eligibility for Security Clearance (SC) and Police Personnel Vetting (PPV3) is required. Applicants must have a minimum of 5 consecutive years’ UK residency or working history. **, * Proven experience in data network engineering, network service assurance, or a comparable 3rd line technical role

• CCNP certification or active progress toward it (preferred)
• Solid working knowledge of MPLS and SD-WAN technologies
• Multi-vendor WAN experience across Palo Alto, Fortinet, Aruba, or Juniper
• Experience in service desk or tiered support environments (1st, 2nd, and/or 3rd line)
• Eligibility for Security Clearance (SC) and Police Personnel Vetting (PPV3)

The following would be an advantage:

• Bachelor’s degree in Computer Science, IT, or a related field
• Familiarity with ITIL or structured service management frameworks, * Technical Depth - Ability to diagnose and resolve complex, low-level network faults in high-pressure, SLA-driven environments without relying on scripts or playbooks
• Stakeholder Communication - Confidence to translate complex technical findings into clear, actionable language for senior management and non-technical audiences
• Collaborative Working - Proven track record of coordinating across multi-team environments, sharing knowledge and driving incident resolution under pressure
• Improvement Mindset - Proactive approach to identifying fault patterns and contributing to lasting improvements in network service quality
• Performance-based bonus
• Professional development and training opportunities
• Flexible working arrangements
• Comprehensive health and wellbeing programme