Microsoft 365 and Systems Administrator

Location: Fitzrovia

Why G&T   Gardiner & Theobald is an independent construction and property consultancy committed to providing world class service to our clients. Our dedicated team of over 1,300 people delivers Cost Management, Project Management and Specialist Consultancy services from a network of UK and US offices bound by a common purpose - to build a better tomorrow.
We define our success by the value we create for our clients, the fulfilling careers we build for our people and our contribution to the communities we work in. Our own long-term business performance aligns profit with purpose, taking social and environmental responsibility for our actions and the legacy we leave behind.
People are central to our mission. Rewarding individuals based on their unique abilities, talent and hard work, we believe in the quality of experiences and investing in a collaborative culture where all can thrive.

About the Role We are recruiting a Microsoft 365 & Systems Administrator to join our IT Infrastructure & Security team.

The role is focused primarily on the administration and support of our Microsoft cloud and endpoint environment, including Microsoft 365, Entra  Intune, alongside a range of supporting infrastructure, security and management platforms.

You will also act as the escalation point within the team for technical issues raised by the Service Desk, resolving issues across our core platforms and escalating more complex work to the Senior Infrastructure Engineers where required.

Key responsibilities

Administering Microsoft 365, Entra , 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 , groups, enterprise applications and access.
Supporting Microsoft Teams.
Supporting Azure Virtual Desktop.
Troubleshooting Microsoft 365, endpoint, identity, authentication and application issues.
Using Power Shell 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.

Shift pattern Please note this role will operate on normal office hours (Mon-Fri 9am-5:30pm) with 4 days in the office and 1 day remote each week, and on call (evenings and weekends) 1 week in every 4.

About You Essential Experience

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 .
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 Power Shell experience for administration or automation.
Good general IT infrastructure knowledge, including networking fundamentals such as TCP/IP, DNS and DHCP.
A structured approach to troubleshooting and the ability to see technical issues through to resolution.
A security-conscious approach to administration.
Excellent written and verbal communication skills.
A collaborative approach to support, with a willingness to work closely with Service Desk colleagues and share technical knowledge.

Desirable experience

Microsoft certifications such as SC-300, MD-102 or AZ-104.
Microsoft Defender or other enterprise security tooling.
Application control or endpoint security platforms.
Patch management and software deployment platforms.
Hybrid Active Directory / Entra .
Windows Server administration.
Enterprise networking, switching, firewalls or VPN technologies.

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