Providing critical support for IT systems, the full-time Senior Linux Administrator will manage infrastructure, troubleshoot issues, and ensure day-to-day operations while working remotely and requiring a Public Trust clearance. Key responsibilities Manage IT system infrastructure, including patching and upgrades Provide second-level problem identification, diagnosis, and resolution for Linux and Windows systems Support day-to-day operations and monitoring of customer IT systems Required qualifications 10+ years of experience supporting Linux and Windows Operating Systems Experience with Nagios for IT infrastructure monitoring U.S. Citizenship required Ability to pass a Federal background investigation Aptitude to learn new tools and technologies