
Tier II Linux Systems Administrator – HPC, Top Secret Clearance
AMERICAN SYSTEMS
full-time
Posted on:
Location Type: Office
Location: Arlington • Virginia • United States
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Salary
💰 $91,600 - $153,000 per year
About the role
- Provide Tier II Linux systems administration support for HPC users with professional, responsive customer service
- Support day-to-day operations and maintenance of HPC compute, storage, and networking environments
- Assist senior system administrators in optimizing hardware and software performance
- Ensure availability, integrity, and reliability of servers, workstations, and data storage systems, including Lustre and Bright
- Administer and manage Linux user accounts, groups, and permissions
- Triage Tier I/II service desk tickets and produce basic service metrics and reports
- Support installation, configuration, and testing of HPC system components, including compute servers, storage systems, networking equipment, and peripherals
- Assist with Linux server configuration, backup operations, and security-related tasks
- Perform hardware replacements not covered by vendor maintenance agreements
- Assist network personnel with equipment configuration, firewall support, and network security activities
- Implement program security requirements and comply with RMF controls
- Adhere to all IT policies, processes, and procedures
- Manage changing priorities in a fast-paced, mission-driven environment
Requirements
- Active Top Secret clearance with SCI eligibility
- U.S. citizenship required
- Bachelor’s degree in a STEM discipline or equivalent relevant experience
- 5–7 years of Linux systems administration experience in production environments
- Experience providing Tier I or Tier II operational support, including troubleshooting and ticket triage
- Hands-on Linux administration experience, including user management, permissions, services, and system monitoring
- Scripting experience using BASH or Python for system administration tasks
- Experience supporting VMware vSphere environments
- Working knowledge of RMF and Linux system hardening
- Current DoD 8140 IAT Level II certification (Security+ CE or equivalent)
- Current RHCSA/RHCE certification or ability to obtain within 6 months of hire
Benefits
- Healthcare benefits
- Paid leave
- Retirement plans
- Insurance programs
- Education and training assistance
Applicant Tracking System Keywords
Tip: use these terms in your resume and cover letter to boost ATS matches.
Hard Skills & Tools
Linux systems administrationHPC supportUser managementPermissions managementScripting (BASH, Python)VMware vSphereSystem monitoringSystem configurationBackup operationsNetwork security
Soft Skills
Customer serviceProblem-solvingCommunicationAdaptabilityTeam collaborationTime managementAttention to detailOrganizational skillsPrioritizationResponsiveness
Certifications
Top Secret clearanceDoD 8140 IAT Level II (Security+ CE or equivalent)RHCSARHCE