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# HPC Linux Systems Administrator

- **Company:** TEKSYSTEMS INC.
- **Location:** Aberdeen Proving Ground, MD, United States
- **Experience:** Expert
- **Contract:** Temporary contract
- **Skills:** CompTIA Security+, Linux, Linux System Administration, Red Hat Enterprise Linux, Supercomputing, High Performance Computing, System Availability
- **Published:** October 26, 2026
- **Apply:** https://www.clearancejobs.com/jobs/9262389/hpc-linux-systems-administrator

## About the Role

Active TS/SCI clearance.
CompTIA Security+ certification.
CompTIA Linux+ certification.
10+ years of HPC experience or experience supporting Linux clusters.
Strong Linux system administration background.
Ability to work independently in a customer-facing environment.
Additional Skills and Qualifications
Experience with RHEL and Red Hat.
Knowledge of high performance computing and supercomputers.
Work Environment
Work 100% onsite at Aberdeen Proving Grounds, Aberdeen, MD in a secure government environment. Experience a fast-paced, mission-critical HPC operations setting with direct customer engagement and responsibilities.

## Description

We are seeking a highly skilled HPC Senior System Administrator to support a large High Performance Computing (HPC) environment at Aberdeen Proving Grounds. This role is 100% onsite and requires an active TS/SCI clearance. The position involves maintaining system health, responding to customer requests, executing system upgrades, and ensuring the security posture of systems on the customer network. The ideal candidate will possess extensive HPC and Linux administration experience and work independently to troubleshoot complex system issues, mitigate security vulnerabilities, and provide knowledge transfer to customer system administrators.

Responsibilities
Administer large-scale HPC clusters.
Maintain system availability, health, and performance.
Respond to customer requests and technical issues.
Plan, coordinate, and execute system upgrades.
Maintain security compliance and remediate vulnerabilities.
Provide customer support and technical guidance.
Deliver knowledge transfer and documentation to customer administrators.
Apply independent judgment in solving highly complex technical challenges.