> Markdown version of [/jobs/ext/2797005-senior-network-support-engineer-cisco](https://www.wearedevelopers.com/jobs/ext/2797005-senior-network-support-engineer-cisco). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Senior Network Support Engineer | Cisco - **Company:** Jarvis King - **Location:** Hatfield, UK - **Experience:** Expert - **Contract:** Permanent contract - **Skills:** Complex Networks, Computer Networks, Multi-protocol Systems, Network Service, Wide Area Networks, Diagnostic Tools, ARUBA, Juniper, SC Clearance, Information Technology, Network Support, Palo Alto Networks, Fortinet, Cisco - **Published:** September 8, 2026 - **Apply:** https://www.collegerecruiter.com/job/2840674244-senior-network-support-engineer--cisco ## About the Role ** 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 ## Description 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 ## Related Videos - [How Cisco embraced a DevOps culture within its network engineering team](https://www.wearedevelopers.com/videos/99-how-cisco-embraced-a-devops-culture-within-its-network-engineering-team) - [Your Infrastructure Is Not a Playground: AI Agents for Infra Done Right](https://www.wearedevelopers.com/videos/2084-your-infrastructure-is-not-a-playground-ai-agents-for-infra-done-right) - [Computer Vision from the Edge to the Cloud done easy](https://www.wearedevelopers.com/videos/263-computer-vision-from-the-edge-to-the-cloud-done-easy) - [What makes Cybersecurity different for critical infrastructure?](https://www.wearedevelopers.com/videos/571-what-makes-cybersecurity-different-for-critical-infrastructure) - [Unlocking the potential of Digital & IT at Vodafone](https://www.wearedevelopers.com/videos/602-unlocking-the-potential-of-digital-it-at-vodafone) ## Related Articles - [IT Salaries in UK](https://www.wearedevelopers.com/magazine/288-it-salaries-in-uk) - [Best Companies to work for in London: Top 25 Companies in 2023](https://www.wearedevelopers.com/magazine/187-best-companies-to-work-for-in-london-top-25-companies-in-2023) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [Where to Find Entry-Level Software Engineering Jobs](https://www.wearedevelopers.com/magazine/397-where-to-find-entry-level-software-engineering-jobs) - [Software Engineer Salary London](https://www.wearedevelopers.com/magazine/252-software-engineer-salary-london) - [Fullstack Developer Salary UK](https://www.wearedevelopers.com/magazine/251-fullstack-developer-salary-uk)