Lead Systems Administrator (Windows O365 Security) London / WFH to £50k

Are you a hands-on IT professional with strong Microsoft 365 and infrastructure experience, looking to combine technical ownership with team leadership in a purpose-driven organisation?

You could be progressing your career, taking ownership of the IT infrastructure for a charity that enables waste food distribution across the UK to those in need.

As a Lead Systems Administrator you'll take responsibility for the systems, devices and infrastructure supporting colleagues across offices and warehouses. Reporting to the Senior Technology Services Manager, you'll lead two System Administrators, spending around 70% of your time on technical delivery and 30% leading and developing the team.

You'll manage the organisation's cloud-based Microsoft 365 environment, including Entra ID, Intune, SharePoint and Teams, alongside Windows laptops, Android warehouse devices and the infrastructure supporting warehouse operations. You'll troubleshoot network and connectivity issues, oversee suppliers, manage user access and licensing and ensure reliable backup and disaster recovery arrangements.

You'll also maintain and improve security across the technology estate, managing Microsoft Defender and Purview, leading Cyber Essentials certification, overseeing vulnerability remediation and responding to security incidents. As the organisation explores AI tools such as Microsoft Copilot, you'll help ensure these are adopted safely, with appropriate access controls and data protection measures.

Working closely with the Service Manager and wider technology team, you'll act as the technical escalation point, improve processes through automation and provide practical advice to senior stakeholders. You'll also maintain technical documentation, strengthen operational processes and help your team develop their skills.

Location / WFH:

You can work from home most of the time, the Charity have five office sites across London, you could go to any of them but will only be required in once a month.

About you:

You have strong hands-on experience with Microsoft 365, Entra ID, Intune, SharePoint and Teams
You have experience managing Windows and Android devices across multiple sites
You have good networking and troubleshooting skills, including working with external suppliers
You have experience with Microsoft security tools e.g. Defender
You have an understanding of backup, disaster recovery, vulnerability management and data protection
You have experience leading or developing a small technical team
Ideally you will have a recognised security qualification, such as CompTIA Security+, CISSP or CISM.
You have a proactive, methodical approach, with strong communication skills and the ability to explain technical issues clearly

What's in it for you:

As a Lead Systems Administrator you will earn a competitive package:

Salary to £50k
25 days holiday (increasing to 30 over time) plus your birthday off
Employee Assistance Programme including 24 hour GP helpline
Cycle to work scheme
Gym and retail discount platform
Continuous training and career development opportunities

Apply now to find out more about this Lead Systems Administrator (Windows O365 Security) opportunity.

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