System Administrator I

Reflexive Concepts, LLC; Maryland; On-site; USD 90,000 - 130,000; Full time

Job summary

Reflexive Concepts is seeking a skilled System Administrator (Level 1) to join our growing team, supporting Linux-based mission operations on a high-impact national security program. Responsibilities include monitoring, troubleshooting, and maintaining diverse systems to ensure mission readiness.

The ideal candidate has at least 3 years of system administration experience, a related degree or equivalent expertise, and a DoD 8570 IAT Level II certification with an active TS/SCI clearance and

Qualifications

• Three (3) years of system administration experience.
• Bachelor's degree or higher in a related technical field, or eight years of experience total.
• Experience with Linux administration on RHEL/CentOS/Rocky/SLES/Ubuntu.
• Experience with OS install, filesystem 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).

Skills

Linux administration

TCP/IP networking

Scripting (Bash)

System troubleshooting

DoD 8570 IAT Level II

TS/SCI clearance

Education

Bachelor's degree in a related field

8 years of system administration experience in lieu of degree

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