Senior System Administrator

Senior Systems Administrator Day rate: £260 per day IR35 status: Inside IR35 Contract: Initial 6 month contract with potential extension Hours: 37.5 hours per week

A large NHS organisation is seeking an experienced Senior Systems Administrator to support and maintain critical IT and Operational Technology (OT) systems across its Estates and Facilities environment. This is a hands-on role operating at the intersection of IT infrastructure, security and operational systems within a complex healthcare setting.

You will be responsible for the administration, security and ongoing optimisation of business-critical systems that support facilities management and hospital operations. Working closely with internal teams and third-party suppliers, you will ensure systems are reliable, secure, compliant and well documented.

The role sits within a central digital and communications function and plays a key part in supporting essential services across a large acute hospital environment.

• Administer and maintain IT and OT systems, ensuring performance, availability and regulatory compliance

• Carry out advanced system monitoring across servers, hardware, applications and key processes

• Manage IT assets with automated monitoring and reporting

• Enforce cybersecurity standards, vulnerability management and security best practice

• Support security patching, disaster recovery, business continuity and recovery processes

• Manage and support Microsoft 365 services including SharePoint Online and Teams

• Oversee identity and access management using Microsoft Entra ID, including MFA and conditional access

• Provide networking and infrastructure support covering WiFi, firewalls, VPNs, DNS, DHCP and TCP/IP

• Act as an escalation point for 2nd and 3rd line technical issues

• Troubleshoot complex issues across hardware, software, cloud and networking environments

• Work closely with third-party suppliers and maintain clear system and configuration documentation

• Strong hands-on experience as a Systems Administrator in a complex enterprise environment

• Solid knowledge of Windows Server, cloud-based systems and supporting infrastructure

• Experience working with Microsoft 365 and identity and access management

• Good understanding of networking fundamentals

• Proven experience supporting secure, highly available systems

• Strong documentation, analytical and problem-solving skills

• Ability to work collaboratively with technical and non-technical stakeholders

• Experience working within the NHS or wider public sector is highly desirable

• Opportunity to support critical healthcare services

• Work within a large-scale, complex digital environment

• Competitive day rate inside IR35

• Potential for contract extension

If you are an experienced Senior Systems Administrator with strong infrastructure, security and cloud experience and are comfortable working in regulated environments, this could be a strong next contract.