Hybrid Microsoft 365 & Systems Administrator

Gardiner & Theobald LLP; Greater London; Hybrid; GBP 45,000 - 65,000; Full time

Job summary

Gardiner & Theobald LLP in London seeks a Microsoft 365 & Systems Administrator to join the IT Infrastructure & Security team. The role focuses on administering Microsoft 365, Entra ID and Intune, and supporting a range of platform services across the IT estate.

You will act as escalation point for Service Desk, resolve issues across core platforms and help drive security and automation through PowerShell scripting.

Qualifications

• Demonstrable experience in a systems administration, Microsoft 365, endpoint management or advanced IT support role.
• Hands-on systems administration experience within a predominantly Microsoft environment.
• Strong hands-on experience administering Microsoft 365, including SharePoint Online.
• Strong hands-on experience with Microsoft Entra ID.
• Strong hands-on experience with Microsoft Intune and Windows endpoint management.
• Experience with endpoint configuration, compliance policies and application deployment.
• Good understanding of Conditional Access, authentication and identity management.
• Experience troubleshooting Microsoft 365, endpoint and identity-related issues.
• Practical PowerShell experience for administration or automation.
• Good general IT infrastructure knowledge, including networking fundamentals such as TCP/IP, DNS and DHCP.

Responsibilities

• Administering Microsoft 365, Entra ID, Microsoft and SharePoint Online.
• Managing endpoint configuration, compliance policies and application deployment.
• Supporting Windows 11 endpoint management.
• Managing patching and third-party software deployment.
• Supporting application control and security tooling.
• Supporting Conditional Access, authentication and identity-related configuration.
• Administering Entra ID users, groups, enterprise applications and access.
• Supporting Microsoft Teams.
• Supporting Azure Virtual Desktop.
• Troubleshooting Microsoft 365, endpoint, identity and application issues.
• Using PowerShell for administration, troubleshooting and automation.
• Acting as the escalation point for Service Desk incidents, providing technical support, troubleshooting and knowledge transfer.
• Triaging infrastructure, platform and security alerts and incidents.
• Maintaining technical documentation and operational runbooks.
• Supporting and administering other business and infrastructure platforms used across the IT estate.
• Assisting with platform changes, upgrades and improvement work.

Skills

Microsoft 365

Entra ID

Intune

SharePoint Online

PowerShell

Endpoint management

Conditional Access

Identity management

Troubleshooting

Networking basics

Tools

PowerShell

Job description

Gardiner & Theobald LLP in London seeks a Microsoft 365 & Systems Administrator to join the IT Infrastructure & Security team. The role focuses on administering Microsoft 365, Entra ID and Intune, and supporting a range of platform services across the IT estate.

You will act as escalation point for Service Desk, resolve issues across core platforms and help drive security and automation through PowerShell scripting.