Senior Systems Administrator - Windows

Role & responsibilities:

Outline the day-to-day responsibilities for this role.

• Administer and support Microsoft Windows Server OS environments including 2016, 2019, 2022, and 2025, ensuring reliability, scalability, and high availability.

• Manage and maintain Active Directory environments including multi-domain forests, sites, replication, and Group Policy, along with Azure Active Directory (Entra ID) integration.

• Configure, manage, and secure Microsoft 365 services such as SharePoint Online, OneDrive, Teams.

• Use Microsoft Endpoint Manager (MEM) including SCCM, Intune, and Autopilot for provisioning, managing, and enforcing compliance on endpoints.

• Automate repetitive administrative tasks using PowerShell, Azure Automation, and Desired State Configuration (DSC).

• Monitor system health and performance using SolarWinds, Nagios, Azure Monitor and integrate alerts into ITSM platforms.

• Support Microsoft Hyper-V for virtual infrastructure, including provisioning, clustering, and disaster recovery.

• Manage patching and vulnerability remediation with tools like SCCM, ManageEngine Patch Manager Plus, WSUS, and Intune Update Management.

• Maintain thorough technical documentation, SOPs, configuration baselines, and architectural diagrams.

• Participate in an on-call support rotation and be available to perform planned maintenance during evenings or weekends as required.

Preferred candidate profile:

• Bachelors or masters degree in computer science, Information Technology, or a related field.

• 5+ years of proven experience as a Windows System Administrator managing Windows Server (2016, 2019, 2022, 2025).

• 4+ years of experience and expertise in Active Directory administration, Group Policy management,

• 4 years of experience in administration of Microsoft 365 services: Exchange Online, SharePoint Online, Teams, and OneDrive.

• Skilled in virtualization technologies: Microsoft Hyper-V.

• Strong knowledge of Microsoft Azure services including Azure AD (Entra ID), Azure AD Connect, AD FS, Azure VMs, and Azure Automation.

• Skilled in endpoint management using Microsoft Intune, SCCM, and Windows Autopilot.

• Proficient in automation and scripting using PowerShell and Desired State Configuration (DSC).

• Effective in managing updates and patches via Intune Update Management and Patch Manager Plus.

• Familiarity with modern automation tools including REST APIs and webhooks.

• Aptitude for implementing AI-assisted automation and scripting solutions.

• Customer-oriented approach with professional troubleshooting capabilities.