{"schemaVersion":"jobsearcher.job.v1","id":"3a7a39f2a9e249f2225d4e7f","url":"https://jobsearcher.com/jobs/3a7a39f2a9e249f2225d4e7f","canonicalUrl":"https://jobsearcher.com/jobs/3a7a39f2a9e249f2225d4e7f","title":"System Administrator III","description":"Reflexive Concepts is seeking a skilled System Administrator (Level 3) to join our growing team!Reflexive Concepts is seeking a skilled System Administrator to support mission operations sustainment — monitoring, troubleshooting, and maintaining Linux-based high-performance computing systems on a high-impact national security mission.Qualifications Ten (10) years of system administration experienceBachelor's Degree or higher in a related technical fieldAn additional five (5) years of system administration experience may be substituted for the degree, for a total of Fifteen (15) years Required:Linux administration on RHEL, CentOS, Rocky, SLES, or UbuntuOS install, file system configuration, and TCP/IP networkingOperating system and application troubleshootingBASH scripting; software compilation and installActive TS/SCI clearance with full-scope polygraph (most recent poly within 7 years)Desired Skills:Understanding of HPC architecture and high-speed networks (InfiniBand, Slingshot)Familiarity with Jira, Confluence, Grafana, Prometheus, Nagios, Slurm, git, Salt, and AnsibleStrong troubleshooting skills — comfort with the reality that no two systems are exactly alike","company":"Reflexive Concepts","rawCompany":"reflexive concepts","state":"MD","isRemote":false,"isActive":false,"createdAt":"2026-06-23T10:52:25.096Z","occupations":[{"code":"15-1244.00","title":"Network and Computer Systems Administrators","slug":"network-and-computer-systems-administrators"},{"code":"15-1299.08","title":"Computer Systems Engineers/Architects","slug":"computer-systems-engineers-architects"},{"code":"15-1299.01","title":"Web Administrators","slug":"web-administrators"}],"industries":[{"code":"541512","title":"Computer Systems Design Services","slug":"computer-systems-design-services"},{"code":"541519","title":"Other Computer Related Services","slug":"other-computer-related-services"},{"code":"541513","title":"Computer Facilities Management Services","slug":"computer-facilities-management-services"}],"jobPosting":{"@context":"https://schema.org","@type":"JobPosting","title":"System Administrator III","description":"Reflexive Concepts is seeking a skilled System Administrator (Level 3) to join our growing team!Reflexive Concepts is seeking a skilled System Administrator to support mission operations sustainment — monitoring, troubleshooting, and maintaining Linux-based high-performance computing systems on a high-impact national security mission.Qualifications Ten (10) years of system administration experienceBachelor's Degree or higher in a related technical fieldAn additional five (5) years of system administration experience may be substituted for the degree, for a total of Fifteen (15) years Required:Linux administration on RHEL, CentOS, Rocky, SLES, or UbuntuOS install, file system configuration, and TCP/IP networkingOperating system and application troubleshootingBASH scripting; software compilation and installActive TS/SCI clearance with full-scope polygraph (most recent poly within 7 years)Desired Skills:Understanding of HPC architecture and high-speed networks (InfiniBand, Slingshot)Familiarity with Jira, Confluence, Grafana, Prometheus, Nagios, Slurm, git, Salt, and AnsibleStrong troubleshooting skills — comfort with the reality that no two systems are exactly alike","datePosted":"2026-06-23T10:52:25.096Z","dateModified":"2026-06-23T10:52:25.096Z","hiringOrganization":{"@type":"Organization","name":"Reflexive Concepts","sameAs":"https://jobsearcher.com"},"jobLocation":{"@type":"Place","address":{"@type":"PostalAddress","addressRegion":"MD","addressCountry":"US"}},"identifier":{"@type":"PropertyValue","name":"JobSearcher","value":"3a7a39f2a9e249f2225d4e7f"},"url":"https://jobsearcher.com/jobs/3a7a39f2a9e249f2225d4e7f"}}