Job Description

Senior Cisco Network Engineer (CCNP) | Enterprise Infrastructure

£500 per day (Umbrella) | Inside IR35
12-month Contract
Hybrid | West Yorkshire (2–3 days per week on site)

Lead the delivery and support of enterprise Cisco network infrastructure within a major public sector organisation

This is an opportunity for an experienced Senior Cisco Network Engineer to join a large, security-conscious public sector organisation supporting critical digital infrastructure across multiple locations.

Working within a specialist enterprise networking team, you'll provide technical leadership across complex Cisco network, firewall, voice and security technologies, ensuring resilient, secure and always-on connectivity for services that make a real operational impact.

This is far more than a BAU support role. You'll lead complex infrastructure changes, resolve high-level technical issues, contribute to major technology programmes and help shape the future of a large-scale enterprise network environment.

The Opportunity

As the senior technical escalation point within the team, you'll support and develop a complex enterprise network comprising Cisco ACI, Nexus, Catalyst, Firepower, ASA, Wireless, Check Point, Azure and Microsoft 365 connectivity.

You'll work on infrastructure improvements, technology refreshes and large-scale implementation projects, collaborating with architects, suppliers and technical specialists to deliver secure, resilient networking services across multiple sites.

You'll also mentor engineers, contribute to technical standards and help ensure infrastructure continues to evolve in line with operational and business requirements.

If you enjoy solving technically challenging problems, influencing technical direction and taking ownership of critical infrastructure, this role offers exactly that.

The Person

We're looking for someone who combines deep Cisco networking expertise with a practical, hands-on approach to enterprise infrastructure.

You'll already have significant experience supporting large-scale Cisco environments and be confident leading the investigation and resolution of complex networking issues.

You'll be comfortable working across routing, switching, firewalls, wireless, WAN, LAN, VPN and cloud connectivity while building strong relationships with colleagues, suppliers and stakeholders.

Experience gained within policing, central government, emergency services, defence or another highly regulated environment would be advantageous, although we're equally interested in candidates from large enterprise organisations supporting mission-critical infrastructure.

Technical Experience

We're particularly interested in candidates with experience of:

• Cisco CCNP (or equivalent experience)
• Cisco ACI
• Cisco Nexus & Catalyst
• Cisco Firepower & ASA Firewalls
• Check Point Firewalls
• Wireless LAN Controllers & Access Points
• BGP & OSPF Routing
• TCP/IP Networking
• VPN Technologies
• VLANs, STP & Port Channels
• DNS & DHCP
• PKI & Certificates
• Microsoft Azure Connectivity
• Microsoft 365 Connectivity
• Enterprise LAN, WAN & Data Centre Networks
• Infrastructure Upgrades & Technical Refresh Programmes
• Technical Leadership & Mentoring

Experience supporting large, multi-site enterprise environments with thousands of users will be highly regarded.

Security & Vetting

Due to the nature of the organisation and the systems you'll support, candidates must be eligible to obtain the appropriate level of security clearance.

Candidates who already hold NPPV3 or Security Check (SC) clearance will be at a distinct advantage, although applications are welcomed from candidates who are eligible and willing to undergo the required vetting process.

Applicants must have the right to work in the UK and satisfy the residency requirements necessary to support security clearance.

Why Apply?

This is an opportunity to work on technology that genuinely matters.

You'll support enterprise infrastructure that enables essential public services, working with modern Cisco networking technologies, cloud connectivity, enterprise security platforms and large-scale infrastructure programmes.

If you're looking for a contract where you'll combine hands-on engineering with technical leadership—and where your expertise will make a tangible operational impact—we'd love to hear from you.