Job 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 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 Fifteen (15) years Required: • 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 • DoD 8570 IAT Level II certification (with verification code) • Active TS/SCI clearance with full-scope polygraph (most recent poly within 7 years) • This position carries an on-call requirement. Desired Skills: • 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

Requirements

Must-haves

Reflexive Concepts is seeking a skilled System Administrator (Level 3) to join our growing team!
Ten (10) 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 Fifteen (15) 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
DoD 8570 IAT Level II certification (with verification code)
Active TS/SCI clearance with full-scope polygraph (most recent poly within 7 years)
This position carries an on-call requirement.

Nice-to-haves

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

Application prep

Use the role’s language and application details while tailoring your materials.

Keywords to mirror

jira

Platform: catsone
Effort: medium