System Administrator II

Reflexive Concepts, LLC; Bluffdale (UT); On-site; USD 85,000 - 130,000; Full time

Job summary

Reflexive Concepts is seeking a skilled System Administrator (Level 2) to support mission operations sustainment on Linux-based HPC systems.

The role focuses on monitoring, troubleshooting, and maintaining high-performance computing environments, with an on-call requirement and clearance as a condition of employment. Candidates should have DoD 8570 IAT Level II certification and TS/SCI with full-scope polygraph, and experience across RHEL/CentOS/Rocky/SLES/Ubuntu.

Qualifications

• Five years of system administration experience.
• Bachelor's degree or equivalent, total 10 years experience optional substitute.
• Linux administration on major distros and networking basics.
• BASH scripting; software compilation and install.
• DoD 8570 IAT Level II certification with verification code.
• Active TS/SCI clearance with full-scope polygraph within 7 years.
• On-call requirement.

Responsibilities

• Monitor Linux-based HPC systems for uptime and performance.
• Troubleshoot system and application issues across environments.
• Perform OS installs, configurations, and hardening tasks.
• Support on-call duties and incident response process.
• Coordinate with toolchains (Jira/Confluence) and HPC workflows.

Skills

Linux administration

Bash scripting

TCP/IP networking

System troubleshooting

Education

Bachelor's degree or higher

Tools

Jira

Confluence

Grafana

Prometheus

Nagios

Slurm

Git

Salt

Ansible

Job description

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:

• 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

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