Location
London

Hours
Full Time

Salary
Competitive, commensurate with experience

About the Role
Join the creative revolution at XR Extreme Reach, a global leader transforming how the world creates, connects, and experiences advertising. As a Senior IT Engineer, you will be a Tier 3 escalation point providing expert technical support for local and global end-users while managing, monitoring, and securing our cloud, hybrid, and local infrastructure. You will own critical enterprise systems, automate workflows, and drive continuous improvement across IT operations and infrastructure projects.

Your key responsibilities include administering and maintaining hybrid identity and global Active Directory environments (Azure AD/Entra ID, GPOs, DNS, DHCP, Sites & Services, AD replication), managing local and cloud infrastructure services (AWS, WorkSpaces, EC2), and maintaining Microsoft 365 tenant configuration, health, and security compliance. You will administer M365 workload services such as Exchange Online, SharePoint Online, OneDrive, Teams, Intune, and Defender/Purview, developing PowerShell scripts and utilizing Power Automate and Graph API for automation and reporting.

As a Tier 3 support and escalation point, you will support endpoint operating systems (Windows, macOS, Linux) and collaboration hardware, maintain ownership of enterprise applications like Jira and Confluence, lead infrastructure and software projects, and proactively create knowledge base documentation while identifying opportunities for IT process improvements.

At XR, you will join a high-energy, collaborative environment that champions innovation, empowers teams to challenge norms, and unlock new possibilities. Your voice, talent, and vision matter here—XR is where you come to grow, learn, and thrive. Ready to make an impact? Let’s shape the future together.

Experience
- 5+ years managing Microsoft 365 enterprise environments including Exchange Online, SharePoint, Teams, and Intune.
- Deep technical expertise in hybrid Active Directory, Azure AD Connect, SSO, MFA, Conditional Access, and identity protection.
- Hands-on experience supporting Windows, macOS, and Linux Server environments.
- Advanced scripting skills using PowerShell and Bash for system administration, reporting, and bulk operations.
- Cloud proficiency with AWS services (EC2, WorkSpaces) and Azure platforms.
- Solid understanding of compliance tools such as DLP, eDiscovery, audit logs, and endpoint security management.

About you
- Outstanding written and verbal communication skills with the ability to interact effectively with both technical teams and non-technical end-users.
- Strong analytical, troubleshooting, and abstract problem-solving capabilities with a proactive approach to improving support processes.
- Ability to collaborate across global teams, prioritize tasks under pressure, and manage changing workloads independently.
- Fluent in oral and written English; additional languages are a plus.
- Willingness to occasionally work outside standard business hours as required.

Qualifications
Relevant technical certifications and a proven track record in enterprise IT environments are highly desirable. A positive attitude, strong work ethic, and passion for technology and innovation are essential.