HPC Linux System Administrator (TS/SCI, On-Call)

Reflexive Concepts, LLC

Georgetown (MD)

On-site

USD 110,000 - 170,000

Full time

5 days ago

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Job summary

Reflexive Concepts, LLC is seeking a System Administrator (Level 3) to monitor, troubleshoot, and maintain Linux-based HPC systems supporting a national security mission. The role requires 10+ years of sysadmin experience, TS/SCI with full-scope polygraph, and DoD 8570 IAT II certification.

You will work on on-call rotations, manage OS installs, networking, and software builds across diverse Linux distributions, leveraging tools like Jira, Confluence, Grafana, and Ansible to sustain critical

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.
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.

Responsibilities

Monitor, troubleshoot, and maintain Linux-based HPC systems.
Support mission operations sustainment for a high-impact national security mission.
Participate in on-call rotations and incident response.