Administer and support Microsoft 365, Entra ID, Intune, SharePoint Online, Windows endpoints, Teams, Azure Virtual Desktop, identity, security, patching, and application deployment. Troubleshoot escalated Service Desk issues, manage compliance and authentication policies, monitor infrastructure and security alerts, automate administration with PowerShell, maintain documentation, and support platform improvements. The role operates mostly onsite with periodic evening and weekend on-call duties.
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.
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.
Gardiner & Theobald LLP London, England Office
London, United Kingdom
Similar Jobs
Artificial Intelligence • Healthtech • Machine Learning • Natural Language Processing • Biotech • Pharmaceutical
Leads global HTA, HEOR, and evidence-generation strategy for a rare disease therapy. Oversees health economic studies, real-world evidence, economic models, patient-reported outcomes, value dossiers, and reimbursement deliverables. Partners with clinical, medical, commercial, access, statistics, regional, and country teams to support launch and lifecycle market access. Requires advanced training and substantial HEOR experience, strong project and stakeholder management, and expertise in drug development, HTA, and evidence dissemination.
Top Skills:
Health Economic ModelingHealth Economics And Outcomes Research (Heor)Health Technology Assessment (Hta)Network Meta-AnalysisPatient-Reported OutcomesReal-World Evidence (Rwe)Systematic Literature Review
Artificial Intelligence • Consumer Web • Digital Media • Information Technology • Social Impact • Software
Own growth for Circle’s Discover marketplace by driving traffic, GMV, and transaction volume. Lead experimentation, lifecycle email, subscriber acquisition, SEO/AEO, creator success, funnel reporting, and retention initiatives. Partner with product, paid media, data, brand, partnerships, the GM, and co-founders to shape and execute marketplace growth strategy in a hands-on player-coach role.
Artificial Intelligence • Healthtech • Machine Learning • Natural Language Processing • Biotech • Pharmaceutical
Leads Pfizer’s Risk Management Center of Excellence, setting global strategy and standards for pharmacovigilance, benefit-risk assessment, risk communication, and risk minimization. Oversees Risk Management Plans, portfolio governance, metrics, forecasting, budgets, regulatory alignment, external collaboration, and continuous improvement. Provides strategic guidance across product lifecycles, influences senior stakeholders, and builds high-performing teams while ensuring compliance with global regulations and company policies.
Top Skills:
ChatgptMicrosoft Copilot
What you need to know about the London Tech Scene
London isn't just a hub for established businesses; it's also a nursery for innovation. Boasting one of the most recognized fintech ecosystems in Europe, attracting billions in investments each year, London's success has made it a go-to destination for startups looking to make their mark. Top U.K. companies like Hoptin, Moneybox and Marshmallow have already made the city their base — yet fintech is just the beginning. From healthtech to renewable energy to cybersecurity and beyond, the city's startups are breaking new ground across a range of industries.
