IT Systems Engineer (InsideIR35)

IT Systems Engineer - West London (InsideIR35)

Harvey Nash has partnered with a well-established client of ours to recruit an experienced IT Systems Engineer on an initial 3-month contract. This is a hands-on infrastructure role, focused on ensuring the reliability, security, and resilience of critical IT systems.

You'll operate as a senior technical escalation point, supporting and improving core infrastructure services while contributing to infrastructure projects, resilience initiatives, and continuous improvement across the wider group technology function.

Key Responsibilities

• Own the availability, performance, and resilience of core infrastructure services across on-premises and Microsoft Azure environments.
• Administer and improve VMware virtualised environments, including capacity planning, optimisation, and resilience design.
• Manage and support Windows Server and Active Directory, including Group Policy, DNS, authentication, and identity integrations.
• Support and develop Azure infrastructure services, including virtual machines, networking, monitoring, backup, and recovery.
• Act as a senior escalation point for complex incidents, supporting diagnosis, resolution, and stakeholder communication.
• Own the operation and continuous improvement of network and security services, including Cisco networking and Fortinet firewalls.
• Support backup, disaster recovery, and resilience planning, including testing and improvement initiatives.
• Participate in a 24x7 on-call rota, providing out-of-hours support for critical incidents when required.

About You

• Practical experience supporting Microsoft Azure infrastructure and hybrid environments.
• Strong hands-on experience across VMware, Windows Server, and Active Directory.
• Solid knowledge of Cisco networking (LAN/WAN, switching, routing) and Fortinet firewalls.
• Strong troubleshooting and fault-finding capability across infrastructure, network, and security services.
• Experience working in multi-site, operationally critical environments where uptime and controlled change are essential.
• Good understanding of infrastructure security principles and service resilience.
• Comfortable working autonomously, while contributing knowledge and best practice across a wider group IT function.
• Any exposure to automation, FinOps, or SecOps concepts would be advantageous.

IT Systems Engineer - West London (InsideIR35)