IT- 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

IT- Microsoft 365 & Systems Administrator

Department: IT

Employment Type: Full Time

Location: G&T London

Description

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 ID and 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 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, authentication 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.

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 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.
• 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 ID environments.
• Windows Server administration.
• Enterprise networking, switching, firewalls or VPN technologies.

About Us

Forward thinking and future focused, we champion social mobility, ethical governance, equality and diversity, creating an inclusive environment where everyone’s unique talents and experiences are valued. Our ESG goals are at the forefront of our business plan, and we are proud to have created social value worth over £19m+ since 2021. Our initiatives include the G&T ESG Committee, dedicated to increasing opportunities and removing barriers for social mobility and equality within the firm, as well as our Next Gen programme which focuses on nurturing the next generation in the industry. Our commitment to realising a more sustainable future is witnessed not only through helping our clients meet their own next zero carbon aspirations but also by reaching our own, with an aim for our firm to be net zero by 2030.