Senior System Administrator

Venn Group; Cambridge; On-site; GBP 60,000 - 80,000; Full time

Job summary

A prominent NHS organization is seeking a Senior Systems Administrator to support critical IT and Operational Technology systems within a large healthcare environment. The role involves administering business-critical systems, ensuring compliance and performance while collaborating with teams and suppliers. Candidates should possess strong experience in systems administration, particularly in Windows Server and cloud environments, and ideally have a background within the NHS. A competitive day rate is offered with the potential for contract extension.

Benefits

Competitive day rate

Opportunity to support critical healthcare services

Potential for contract extension

Qualifications

• Strong hands-on experience as a Systems Administrator in an enterprise environment.
• Solid knowledge of cloud-based systems and supporting infrastructure.
• Proven experience supporting secure, highly available systems.

Responsibilities

• Administer and maintain IT and OT systems for facility management.
• Manage IT assets with automated monitoring and reporting.
• Enforce cybersecurity standards and manage security patching.

Skills

Systems Administrator experience

Knowledge of Windows Server

Experience with Microsoft 365

Understanding of networking fundamentals

Documentation and problem-solving skills

Collaborative work with stakeholders

Experience in NHS or public sector

Job description

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.

The role

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.

Key responsibilities

• 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

Skills and experience required

• 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

Why apply

• 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.