<p>Robert Half Technology is seeking a skilled Systems Administrator to support and maintain a mixed Linux and Windows infrastructure in a dynamic, multi-environmental client. </p><p><br></p><p><strong>Duration:</strong> Contract opportunity, with potential to extend </p><p><strong>Schedule:</strong> Monday-Friday (8AM-5PM)</p><p><strong>Location:</strong> Seattle, Washington</p><p><br></p><p>This role will be responsible for infrastructure operations, cloud and identity management, networking, and security compliance, while also contributing to ongoing system improvements and documentation.</p><p><br></p><p><strong>Key Responsibilities</strong></p><ul><li>Administer and maintain Linux (RHEL/Ubuntu) and Windows server environments </li><li>Manage Microsoft 365 tenant, including Exchange Online, Entra ID (Azure AD), Conditional Access, and endpoint policies </li><li>Support and maintain network infrastructure, including firewalls, VPNs, and segmentation </li><li>Perform storage administration and support ongoing infrastructure projects </li><li>Manage patching, system updates, and vulnerability remediation across servers and endpoints </li><li>Support security and compliance initiatives, including documentation, access control, and audit readiness </li><li>Administer source control systems and assist with migrations as needed </li><li>Respond to helpdesk tickets and provide end-user support across multiple environments </li><li>Maintain and improve technical documentation, runbooks, and knowledge base articles </li><li>Participate in on-call rotation for critical system support </li></ul>