Senior Network & Infrastructure Lead Engineer

ed Resourcing Ltd seeks a Senior Network & Infrastructure Lead Engineer for a permanent, full-time post based in London, offering up to £90,000 plus bonus and health scheme. This hybrid role places you as the technical authority for a business-critical enterprise network and Nutanix estate. You will direct architecture, engineering, troubleshooting, and resilience across a large distributed environment. Working alongside vendors, partners, and managed service providers, you will provide technical challenge and oversight. This hands‑on position suits an engineer eager to own complex problems and drive continuous improvement, ensuring optimal performance and stability across the infrastructure.

Location: Hybrid, South London

Job Type: Permanent

What You'll Be Doing

Network Engineering

Take technical ownership of enterprise network services across LAN, WAN, wireless and remote connectivity. Design, implement and support resilient network solutions across a large multi‑site environment. Work with routing and switching technologies including OSPF and BGP . Support SD‑WAN, firewalls, VPNs, VLANs, DNS and DHCP. Lead troubleshooting of complex network and connectivity issues. Support branch, office, warehouse, data centre and remote‑site connectivity. Improve network monitoring, alerting, visibility and capacity management. Lead network lifecycle, refresh and modernisation initiatives. Conduct root cause analysis following major incidents and recurring faults. Review technical designs, network changes and implementation plans.

Nutanix Infrastructure

Take technical ownership of the organisation's Nutanix infrastructure platform . Administer and support Nutanix AHV clusters and Prism Central/Prism Element. Manage lifecycle activities, upgrades, patching and platform maintenance. Monitor and optimise performance, capacity, availability and resilience. Troubleshoot compute, storage, virtualisation and cluster‑related issues. Develop and maintain technical standards, runbooks and operational procedures. Support backup, disaster recovery and business continuity requirements. Drive platform optimisation, standardisation and continuous improvement.

Technical Leadership & Suppliers

Act as the senior technical escalation point for network and Nutanix‑related issues. Lead technical troubleshooting during major incidents and drive effective service restoration. Work with vendors, MSPs and technology partners to resolve complex technical issues. Review supplier technical proposals, designs, implementation plans and changes. Challenge suppliers constructively around resilience, performance, security and permanent remediation. Monitor supplier performance, technical risks and outstanding improvement actions. Ensure internal technical knowledge and documentation remain strong, reducing dependency on third parties.

Continuous Improvement

Define and maintain technical standards across networking and infrastructure. Improve resilience, stability, security and operational visibility. Identify opportunities for automation, simplification and standardisation. Maintain accurate network diagrams, configuration records, documentation and runbooks. Support disaster recovery testing and infrastructure resilience exercises. Communicate technical risks and recommendations clearly to both technical and non‑technical stakeholders.

What We’re Looking For

• 8+ years' experience in enterprise infrastructure and networking.
• Strong hands‑on enterprise network engineering experience.
• Extensive experience administering and supporting Nutanix environments.
• Strong knowledge of Nutanix AHV, Prism Central and Prism Element .
• Strong networking knowledge covering TCP/IP, routing, switching and VLANs .
• Experience with OSPF and BGP .
• Experience with SD‑WAN, firewalls and VPN technologies .
• Experience supporting large, multi‑site or distributed environments.
• Strong troubleshooting and root cause analysis skills.
• Experience leading technical resolution during major incidents.
• Experience designing resilient, highly available network and infrastructure solutions.
• Experience with monitoring, performance management and capacity planning.
• Strong technical documentation and operational runbook experience.
• Experience working with vendors, MSPs and external technology partners.
• Experience of network modernisation, infrastructure transformation or large‑scale technology refresh programmes would also be highly valuable.

What You’ll Bring

• Takes genuine ownership of technical outcomes.
• Enjoys remaining hands‑on and technically involved.
• Can operate calmly and effectively during major incidents.
• Has excellent analytical and problem‑solving skills.
• Thinks about resilience, security and long‑term supportability rather than simply fixing today's problem.
• Can challenge suppliers and technical partners confidently.
• Communicates complex technical issues clearly.
• Enjoys improving infrastructure rather than simply maintaining it.
• Leads through technical expertise, collaboration and example.

Why This Role?

This is an opportunity to take real technical ownership of a critical enterprise environment. You’ll have the opportunity to influence network and infrastructure architecture, improve resilience and performance, lead complex technical initiatives and shape how the organisation operates its network and Nutanix platforms. If you're an experienced network/infrastructure engineer who wants to remain hands‑on while operating at a senior technical level, we'd be keen to hear from you.

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