System Administration (All Levels) - TS/SCI Poly required with Security Clearance

We are seeking System Administrators at all experience levels to support mission operations sustainment activities, including system monitoring, troubleshooting, maintenance, and operational support within large-scale Linux environments. This position is heavily focused on Linux system administration in mission-critical environments supporting high-performance computing (HPC) infrastructure and operational platforms. Candidates should possess strong troubleshooting abilities and be comfortable supporting systems where each environment may require unique solutions and approaches. Minimum Qualifications

• Active TS/SCI with Polygraph

Responsibilities

• Support mission operations sustainment activities including monitoring, troubleshooting, and system maintenance
• Install, configure, and maintain Linux operating systems and applications
• Perform file system configuration and system optimization
• Troubleshoot operating system, application, and network-related issues
• Support TCP/IP networking configuration and troubleshooting
• Compile, install, and maintain software packages and applications
• Develop and maintain Bash scripts to support operational efficiency and automation
• Support enterprise monitoring, alerting, and metrics platforms
• Collaborate with engineering and operations teams to maintain system stability and performance
• Participate in root cause analysis and issue resolution efforts

Required Qualifications

• Strong Linux system administration experience with:
• RHEL
• CentOS
• Rocky Linux
• SLES
• Ubuntu
• Experience with:
• OS installation and configuration
• File system management
• TCP/IP networking
• Operating system and application troubleshooting
• Bash scripting
• Software compilation and installation
• Understanding of High-Performance Computing (HPC) architecture
• Knowledge of high-speed networking technologies such as:
• InfiniBand
• Slingshot
• Familiarity with the following tools and technologies:
• Jira
• Confluence
• Grafana
• Prometheus
• Nagios
• Slurm
• Git
• Salt
• Ansible
• Strong troubleshooting and analytical skills
• Ability to work independently in complex operational environments where systems and solutions may vary significantly