Senior Systems Administrator

Location: Great Shelford

Senior Systems Administrator

Rate: £25.15 per hour PAYE / £37.78 per hour Umbrella
IR35:
Inside IR35

Contract:

6 months

Hours:

Full time

Location:

Cambridge (CB2) – hybrid/onsite as required

The Role

We are working with a large NHS organisation in Cambridge to recruit an experienced Senior Systems Administrator for a 6-month contract engagement.

This is a senior, hands-on role operating at the intersection of Information Technology (IT) and Operational Technology (OT), supporting critical systems used across estates and facilities teams in a complex, highly regulated healthcare environment.

You will play a key role in ensuring the reliability, security, compliance, and documentation of enterprise infrastructure and third-party systems that directly support hospital operations.

Key Responsibilities

Systems Administration & Infrastructure

· Administer and maintain enterprise IT systems and third-party devices, following best-practice lifecycle management

· Perform advanced system monitoring to ensure availability, performance, and integrity

· Embed operational best practice across systems, processes, and teams

· Maintain IT asset data with automated monitoring and reporting

Security & Compliance

· Enforce cybersecurity standards and carry out vulnerability management

· Ensure compliance with security, Information Governance, and NHS frameworks

· Manage security tooling, patching, and hardening activities

· Support BIA, BCP, and recovery practices

Cloud & Microsoft Technologies

· Support and manage cloud environments in collaboration with suppliers

· Administer Microsoft 365 services including Teams and SharePoint Online

· Manage Identity & Access Management using Microsoft Entra  (MFA, Conditional Access, user provisioning)

· Contribute to system maturity and continuous improvement frameworks

· Networking & Connectivity

· Provide support across WiFi, firewalls, VPNs, and core networking services

· Apply strong knowledge of DNS, DHCP, TCP/IP, switches, and routers

· Monitor and optimise system performance for high availability

3rd Line Support & Escalation

· Act as escalation point for complex 2nd/3rd line incidents

· Provide expert support for business-critical systems (e.g. CAFM and estates platforms)

· Diagnose and resolve infrastructure, application, and network issues in line with SLAs

Vendors & Documentation

· Work closely with external vendors and service providers

· Maintain configuration management, technical documentation, and operational processes

· Ensure secure storage, backup, and recoverability of systems and data

Essential Experience & Skills

· Proven experience as a Senior Systems Administrator / Infrastructure Engineer in large enterprise environments

· Strong Windows Server, Active Directory, and Microsoft SQL experience

· Experience supporting Microsoft 365, Azure, and hybrid environments

· Solid understanding of cybersecurity, patching, and compliance frameworks

· Strong networking fundamentals (DNS, DHCP, VPNs, firewalls)

· Excellent documentation, troubleshooting, and stakeholder engagement skills

Desirable

· Experience working in the NHS, public sector, or highly regulated environments

· ITIL, PRINCE2, or similar service/project management certification

· Experience supporting estates, facilities, or OT-adjacent systems

· Experience mentoring or guiding junior engineers

If this role is of interest and you meet the above criteria, then please apply immediately