Sr. Systems Administrator (L3 MSP Infrastructure + Cloud Engineering)

The Role:

You will work across a broad range of technologies including Microsoft 365, Windows Server, virtualisation platforms, backup systems and endpoint management solutions. You will also develop automation workflows, contribute to internal documentation and support escalated technical issues when required.

Responsibilities:

• Perform advanced Windows Server administration, including user/group management, permissions, and performance monitoring.
• Administer and maintain Active Directory and Microsoft Entra ID, including identity lifecycle management and security policies.
• Design, implement, and maintain Group Policy configurations.
• Monitor system health and performance across client environments, proactively identifying and resolving issues.

• Perform advanced administration of Microsoft 365 tenants across multiple clients, including Exchange Online, SharePoint Online, Teams, and OneDrive for Business.
• Design, configure, and maintain Microsoft Intune policies, including device compliance, configuration profiles, application deployment, Windows Autopilot, and Endpoint Privilege Management (EPM).
• Administer Microsoft Entra ID (Azure AD), including identity lifecycle management, Conditional Access policies, Privileged Identity Management (PIM), role assignments, and B2B/B2C scenarios.
• Manage Microsoft Azure services, including Azure Virtual Machines, Azure Files, Azure Blob Storage, Azure Virtual Networks, and resource group governance.
• Configure and maintain Microsoft Defender for Endpoint, Defender for Business, and associated security policies.
• Administer Microsoft Purview compliance features, including Sensitivity Labels, Data Loss Prevention (DLP), Retention Policies, and Litigation Hold.
• Manage Microsoft 365 licensing, including allocation, optimization, and procurement coordination through distribution partners.
• Implement and maintain Microsoft Security Baselines across client tenants to align with frameworks such as the ACSC Essential Eight.

• Develop, maintain, and deploy intermediate to advanced PowerShell scripts to automate administrative tasks across Microsoft 365, Entra ID, Intune, Azure, and on-premises environments.
• Build and manage automation workflows using Microsoft Graph API, Power Automate, and REST API integrations.
• Create scripts for deployment via Datto RMM or other remote monitoring and management (RMM) platforms, including scheduled tasks, compliance checks, and system reporting.
• Maintain a library of reusable scripts and contribute documented automation solutions to the internal knowledge base.
• Troubleshoot and adapt existing scripts in response to platform changes or errors.

• Maintain virtualization platforms, including VMware and Hyper-V.
• Monitor and optimize server performance, storage, and reliability.
• Assist in designing and implementing infrastructure projects, including deployments, migrations, and cloud transitions.

• Configure, maintain, and monitor backup platforms to ensure reliable recovery.
• Administer enterprise backup solutions, including Acronis and Kaseya.
• Perform routine backup verification, testing, and auditing.

• Administer endpoint security and protection platforms.
• Work with the Kaseya ecosystem, including:
• Datto RMM
• IT Glue
• Endpoint Security (AV, EDR, MDR)
• SaaS Protection and Monitoring
• Email Security (Graphus, INKY)

• Provide Level 3 technical support by assisting the service desk with escalated technical issues.
• Mentor and provide technical guidance to junior engineers.
• Contribute to process improvements, technical documentation, and internal knowledge base resources.

• Communicate with clients regarding system improvements, incidents, and technical recommendations.
• Assist with infrastructure planning, cloud adoption, and continuous improvement initiatives.

• Maintain accurate and up-to-date documentation for systems, environments, and operational procedures.
• Participate in internal meetings, training sessions, and ongoing professional development.
• Maintain a high standard of professionalism and deliver exceptional customer service in all client interactions.

What We're Looking For:

Experience with Datto RMM, IT Glue, Halo PSA, or similar MSP tools is highly regarded