Summary

The Senior Systems Administrator designs, implements, and maintains enterprise IT infrastructure across cloud, endpoint, identity, server, and collaboration platforms. Responsibilities include administering Windows, Linux, and macOS systems; managing Active Directory, Azure AD/Entra ID, and endpoint platforms like Intune and JAMF; optimizing system performance and reliability; and developing automation scripts. This role requires 5+ years of enterprise infrastructure experience, advanced knowledge of Microsoft identity and collaboration services, and acts as a technical lead for infrastructure projects while mentoring junior administrators.