Salary: £48,000 - 88,000 per year Requirements: Extensive experience in systems administration Strong knowledge of cloud-hosted environments and on-prem systems Proficient in managing Microsoft 365 services, including SharePoint Online and Teams Expertise in identity and access management via MS Entra ID In-depth understanding of network protocols such as DNS, DHCP, TCP/IP Experience with security compliance and vulnerability management Strong troubleshooting skills for hardware, software, and networking issues Ability to implement automation and best practices in systems and processes Excellent communication and collaboration skills Responsibilities: Manage and optimise on-prem and cloud-hosted systems Perform advanced daily monitoring of servers, hardware, and key services Oversee lifecycle management of IT assets and third-party devices Conduct vulnerability scanning and manage remediation activities Operate security control tools to protect corporate assets Maintain patching, business impact analysis, business continuity planning, and recovery processes Administer cloud environments in partnership with suppliers Oversee Identity & Access Management via MS Entra ID Support WiFi, firewalls, VPNs, and core network services Act as a senior escalation point for 2nd/3rd line issues Troubleshoot complex hardware, software, and network problems Provide expert support for critical systems such as CAFM Technologies: Cloud Hardware Support Microsoft 365 Network Security SharePoint TCP/IP Office 365 CAFM More: We are a central government organisation located in Cambridge, seeking a Senior Systems Administrator to join our team. We offer a competitive day rate of £40 per hour inside IR35. Our success is built on our diverse and inclusive community, where we value equality and respect. We encourage applications from individuals of all backgrounds and perspectives. If you need assistance during the recruitment process, please let us know. Join us to help deliver the best resourcing solutions for our clients. last updated 5 week of 2026