System Administrator I

Reflexive Concepts, LLC; Fort Meade (MD); On-site; USD 65,000 - 95,000; Full time

Job summary

Reflexive Concepts, LLC is seeking a System Administrator Level 1 to support Linux-based systems for a high-impact national security mission. Responsibilities include monitoring, troubleshooting, and maintaining Linux environments, with emphasis on reliability and security.

The role requires DoD 8570 IAT II certification and an active TS/SCI clearance with a full-scope polygraph within 7 years, plus strong scripting and networking skills.

Qualifications

• Three (3) years of system administration experience.
• Bachelor's Degree or higher in a related technical field, or 8 years total experience in lieu of degree.
• DoD 8570 IAT Level II certification (with verification code).
• Active TS/SCI clearance with full-scope polygraph (most recent poly within 7 years).

Responsibilities

• Monitor, troubleshoot, and maintain Linux-based systems in a high-impact mission environment.
• Support Y4 Desktop Services mission operations sustainment with system administration tasks.
• Collaborate with cross-functional teams to ensure system reliability and security.

Skills

System administration

BASH scripting

Troubleshooting

Linux

Networking (TCP/IP)

HPC familiarity

Education

Bachelor's degree or higher in a related technical field

Tools

Jira

Confluence

Grafana

Prometheus

Nagios

Slurm

Git

Salt

Ansible

Job description

Reflexive Concepts is seeking a skilled System Administrator (Level 1) to join our growing team!

Reflexive Concepts is seeking a System Administrator to support Y4 Desktop Services mission operations sustainment — monitoring, troubleshooting, and maintaining Linux-based systems on a high-impact national security mission.

Qualifications

• Three (3) 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 Eight (8) 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)

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