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System Administrator II
Reflexive ConceptsUDC, UT; NBP 324, MD; UDC, UT; MegaCenter, MD; UDC, UT; MegaCenter, MD, United Statesfull_timeVerifiedPosted 4 Aug 2026
About the role
Reflexive Concepts is seeking a skilled System Administrator (Level 2) 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:
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:
- Five (5) years of system administration experience
- Bachelor's Degree or higher in a related technical field
- An additional five (5) years of system administration experience may be substituted for the degree, for a total of Ten (10) years
- Linux administration on RHEL, CentOS, Rocky, SLES, or Ubuntu
- OS install, file system configuration, and TCP/IP networking
- Operating system and application troubleshooting
- BASH scripting; software compilation and install
- Active TS/SCI clearance with full-scope polygraph (most recent poly within 7 years)
- Understanding of HPC architecture and high-speed networks (InfiniBand, Slingshot)
- Familiarity with Jira, Confluence, Grafana, Prometheus, Nagios, Slurm, git, Salt, and Ansible
- Strong troubleshooting skills — comfort with the reality that no two systems are exactly alike
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