Systems Administrator

We are seeking a Senior Systems Administrator to play a key role in maintaining, securing, and optimizing our client's enterprise infrastructure. The ideal candidate is a hands-on technical professional who enjoys solving complex infrastructure challenges, improving automation, and helping drive modernization across cloud and on-premises systems.ResponsibilitiesAdminister and support Microsoft 365 services including Exchange Online, Entra ID (Azure AD), Teams, SharePoint Online, and OneDrive.Manage endpoint deployment, configuration, compliance, and lifecycle management using Microsoft Intune and MDM solutions.Maintain and troubleshoot Windows Server infrastructure, Active Directory, Group Policy, DNS, DHCP, and file services.Support and administer Linux servers for application hosting, monitoring, and system maintenance.Implement and maintain security controls across the environment, including MFA, Conditional Access, endpoint protection, vulnerability remediation, and identity governance.Monitor infrastructure performance, availability, and security utilizing enterprise monitoring and logging tools.Participate in security audits, risk assessments, incident response, and remediation efforts.Manage user provisioning, access control, and role-based security policies.Assist with backup, disaster recovery, and business continuity planning.Develop and maintain system documentation, procedures, and technical standards.Support infrastructure projects including migrations, upgrades, cloud adoption initiatives, and automation efforts.Collaborate with vendors, business stakeholders, and internal IT teams to resolve issues and implement new technologies.