Job Vacancy Senior IT Support Analyst (Nuclear Sector)

Location: UK (occasional travel required)
Clearance: Must be eligible for SC Clearance (UK nationals only)
Employment Type: Permanent
Environment: Highly regulated engineering / technical sector

The Senior IT Support Analyst will play a key role in delivering advanced technical support across a secure, highly regulated engineering environment. The role focuses on the security, resilience, and operational stability of IT systems, supported by strong expertise in infrastructure, Microsoft technologies, virtualisation, and cybersecurity best practice.

You will be part of a dedicated IT function responsible for maintaining critical business systems, ensuring compliance with regulatory frameworks, and supporting ongoing improvement projects across the organisation's technical landscape.

• Provide advanced support for hardware, software, networking, and security incidents.
• Investigate, diagnose, and resolve complex technical issues across server, desktop, and infrastructure environments.
• Deliver high-level support to internal users and ensure service continuity.

• Administer and maintain Windows Server environments (2019-2025).
• Manage Active Directory, Group Policy, and Entra ID.
• Support and administer Privileged Access Management (PAM) and Role-Based Access Control (RBAC).
• Maintain and optimise Microsoft 365 services, including Exchange Online, Teams, and Purview.
• Support VMware vSphere and VMware Horizon VDI platforms.

• Ensure systems adhere to organisational security policies and regulatory standards.
• Support compliance with cybersecurity frameworks such as ISO 27001, Cyber Essentials Plus, and CAF 2.0.
• Deploy, monitor, and maintain endpoint security solutions.
• Contribute to audit readiness and documentation requirements.

• Support backup and disaster recovery procedures to maintain system continuity.
• Assist in testing, validating, and maintaining DR plans and tooling.

• Assist with troubleshooting network issues including TCP/IP, DNS, DHCP, and connectivity problems.
• Collaborate with network specialists to resolve escalated issues.

• Participate in or lead IT projects aimed at system upgrades, security enhancements, and process improvements.
• Contribute to technology roadmaps, system enhancements, and infrastructure evolution.
• Maintain accurate technical documentation, asset inventories, and configuration records.

• Provide occasional out-of-hours support for maintenance windows or critical tasks.
• Travel to satellite UK office locations when required.

• Strong 2nd line experience with exposure to 3rd line responsibilities in enterprise environments.
• Advanced knowledge of Windows Server, Active Directory, Entra ID, and Microsoft 365.
• Experience supporting VMware vSphere and Horizon VDI.
• Good understanding of networking fundamentals (TCP/IP, DNS, DHCP).
• Familiarity with backup solutions and business continuity processes.
• Awareness of IT security principles and governance frameworks.
• Excellent analytical and technical troubleshooting skills.
• Experience supporting Autodesk products.
• Full UK driving licence.
• Must be a UK national due to security clearance requirements.

• Exposure to Azure or AWS cloud environments.
• Experience with endpoint management tools such as Intune.
• Knowledge of alternative hypervisors (Nutanix AHV, Hyper‑V).
• Experience with disaster recovery planning and testing.
• Familiarity with SAP S/4HANA.

• Strong technical curiosity and willingness to learn.
• Methodical, structured, and security‑focused in approach.
• Able to translate complex technical issues to non‑technical users.
• Comfortable working independently and taking ownership of outcomes.
• Effective communicator with strong stakeholder management abilities.
• Self‑starter with high attention to detail and excellent documentation habits.
• Demonstrates integrity, professionalism, and a collaborative working style.

To find out more about Computer Futures please visit

Computer Futures, a trading division of SThree Partnership LLP is acting as an Employment Business in relation to this vacancy | Registered office | 8 Bishopsgate, London, EC2N 4BQ, United Kingdom | Partnership Number | OC387148 England and Wales