HPC Systems Administrator with Security Clearance

Overview
We are seeking an experienced HPC Systems Administrator to support a large-scale High Performance Computing (HPC) environment in a secure government setting. This position is responsible for maintaining the health, performance, availability, and security of mission-critical Linux-based computing infrastructure that supports advanced research and operational workloads.

The ideal candidate will have extensive experience administering Linux systems within clustered or HPC environments and possess a strong background in troubleshooting, security compliance, system upgrades, and customer support.

Responsibilities
Administer and maintain large-scale HPC and Linux cluster environments
Monitor system performance, health, and availability
Troubleshoot and resolve complex technical issues
Plan, coordinate, and execute system upgrades and maintenance activities
Maintain security compliance and remediate vulnerabilities
Support system accreditation and security requirements
Respond to user requests and provide technical assistance
Develop and maintain technical documentation
Provide knowledge transfer and guidance to customer administrators
Work independently to solve highly complex infrastructure challenges
Serve as a technical advisor and trusted resource for stakeholders Required Qualifications
Active TS/SCI Clearance
CompTIA Security+ certification
CompTIA Linux+ certification
10+ years of experience supporting:
High Performance Computing (HPC) environments, OR
Large Linux cluster infrastructures
Strong Linux systems administration experience
Experience maintaining highly available enterprise systems
Ability to work independently in a customer-facing environment
Strong troubleshooting and problem-solving skills

Preferred Qualifications
Experience with Red Hat Enterprise Linux (RHEL)
Experience supporting large-scale compute clusters
Familiarity with supercomputing environments
Knowledge of vulnerability management and system hardening
Experience performing upgrades, patch management, and lifecycle support within secure environments Desired Technical Skills
Linux Administration
HPC Operations
RHEL / Red Hat
Cluster Management
System Performance Monitoring
Security Compliance
Vulnerability Remediation
Infrastructure Maintenance
Enterprise System Support
Documentation and Knowledge Transfer Why Join Us?

Support mission-critical computing systems supporting national security objectives
Work with advanced HPC and large-scale Linux infrastructure
High-impact role with significant technical ownership
Direct engagement with end users and technical stakeholders
Opportunity to solve complex infrastructure challenges in a secure environment