Microsoft Systems Adminstrator

Under the direction of the Head of IT, manage and support our Microsoft ecosystem across identity, messaging, endpoint management, security, and cloud platforms. This role plays a key part in maintaining a secure, reliable, and well-managed environment leveraging Active Directory, Microsoft 365, Exchange Online, Intune, Defender, and Azure. The ideal candidate is hands-on, security-minded, and comfortable supporting both day-to-day operations and longer-term modernization initiatives.

Principal Responsibilities

• Identity & Access Management

• Administer on premises Active Directory, including users, groups, OUs, GPOs, and DNS
• Manage Entra ID (Azure AD) and hybrid identity environments
• Implement and maintain MFA, Conditional Access, RBAC, and least privilege access

• Microsoft 365 & Exchange Online

• Administer Microsoft 365 services including Exchange Online, SharePoint Online, OneDrive, and Teams
• Manage mailboxes, shared mailboxes, distribution groups, and mail flow
• Perform message tracing, email security investigations, and service health monitoring
• Manage licensing and service configurations

• Endpoint & Device Management (Intune)

• Manage devices using Microsoft Intune
• Deploy configuration profiles, compliance policies, applications, and updates
• Support modern device provisioning and lifecycle management

• Security & Defender

• Administer Microsoft Defender (Defender for Endpoint, Defender for Office 365, Defender for Identity)
• Monitor alerts and assist with incident investigation and remediation
• Apply Microsoft security baselines and best practices

• Azure Administration

• Manage core Azure resources such as subscriptions, resource groups, virtual machines, networking, and storage
• Monitor performance, availability, and costs
• Support cloud initiatives and incremental migrations

• Operations & Support

• Provide Tier 2/3 support for Microsoft platform issues
• Automate administrative tasks using PowerShell
• Maintain documentation, procedures, and runbooks
• Collaborate with other IT teams on projects and improvements

Do you have experience in Threat detection & response?