HPC ​/ Linux Systems Administrator

About VIRSIG

VIRSIG is a mission-focused technology and infrastructure company dedicated to serving those who serve. We design, deploy, integrate, and sustain mission-critical construction, security, communications, and technology solutions for federal, state, local, and commercial customers.

We are guided by our core values:

• People Matter
• Do the Right Thing
• Long-Term vs. Short-Term Focus
• Endless Pursuit of Excellence
• Be Heroic
• Never Give Up

VIRSIG is looking for an experienced HPC/Linux Systems Administrator to handle on-site system administration, operational support, and cybersecurity compliance for a Hewlett Packard Enterprise (HPE)
High-Performance Computing cluster supporting Artificial Intelligence (AI) and Machine Learning (ML) workloads at NAVOCEANO, Stennis Space Center, MS. This system is a strategic Navy asset built on GPU accelerated compute nodes, an HPE Slingshot high speed interconnect, aLustreparallel file system, andimage basedOS deployment infrastructure. If you enjoy solving complex technical challenges, working with cutting-edge HPC technologies, and supporting critical Department of Defense missions, we'd like to hear from you.

As the HPC / Linux Systems Administrator, you will:

• Install, configure, and maintain HPC components, including CPU/GPUcomputenodes, the Slingshot interconnect, and the Lustre parallel file system
• Build and manage OS images for compute and servicenodesso the software environment stays stable and consistent
• Manage user accounts, access controls, and resource allocation, and run the Slurmjob scheduler
• Monitor system health and performance, handle routine maintenance and firmware updates, and coordinate hardware repairs with the vendor
• Keep system documentation current, including configuration details, troubleshooting steps, and security protocols
• Configure and manage the network, including switches, routers, and firewalls, and troubleshoot connectivity issues
• Manage HPC storage (Lustre, HPE Parallel File System, GPFS), including backups and capacity monitoring
• Install andmaintainthe HPC/AI-ML software stack (compilers, libraries, Tensor Flow,PyTorch, Docker, Singularity/Apptainer) and manage licenses
• Support users with performance tuning, GPU utilization, and getting the most out of the interconnect and file system
• Harden systems to DISA STIG requirements and support quarterly STIG compliance checks and remediation
• Run vulnerability scans and fix what they find,monitor security logs, respond to incidents, and help with A&A/ATO documentation
• Train NAVOCEANO staff through onthe job instruction and documentation, andcarry out a knowledge transfer plan so government staff can run the system independently by the end of the contract
• Help with monthly status reports, quarterly program reviews, and other NAVOCEANO briefings as needed

• U.S. citizen with an active DoD Top Secret clearance (Tier 5 investigation),adjudicated and in place before the contract start date
• Meets the OPM qualification standard for IT Specialist (2210) or Computer Scientist (1550) at the GS-12 level or above,roughly 4years of specialized IT/network administration experience
• Bachelor's degree in Computer Science, or a bachelor's degree with 30 semester hours in math, statistics, and computer science (at least 15 of those hours in calculus or statistics), or equivalent experience
• Hands on experience running Linux in an HPC environment
• Experience with parallel file systems (Lustre), GPU accelerated compute nodes, andhigh speed interconnects (HPE Slingshot)
• Experience with job schedulers (Slurm) and containers (Docker, Singularity/Apptainer)
• Familiarity with DISA STIGs, vulnerability management, and DoD security frameworks (NIST 800-53, DoD Risk Management Framework)
• Solid written and verbal communication skills, comfortable writing trainingmaterialsand teaching government staff

• Experience with HPE Cray System Management or HPE Performance Cluster Manager
• Experience supporting AI/ML frameworks (Tensor Flow,PyTorch) on HPC systems
• Priorworkon a DoD or Navy system administration contract, ideally in scientific or oceanographic computing
• DoD 8570/8140 IA…