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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 

Position Summary 

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, a Lustre parallel file system, and image based OS 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.

What You'll Do

As the HPC / Linux Systems Administrator, you will:

• Install, configure, and maintain HPC components, including CPU/GPU compute nodes, the Slingshot interconnect, and the Lustre parallel file system

• Build and manage OS images for compute and service nodes so the software environment stays stable and consistent

• Manage user accounts, access controls, and resource allocation, and run the Slurm job 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 and maintain the HPC/AI-ML software stack (compilers, libraries, TensorFlow, 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 on the job instruction and documentation, and carry 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 

Required Qualifications 

• 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 4 years 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, and high 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 training materials and teaching government staff

Preferred Qualifications 

• Experience with HPE Cray System Management or HPE Performance Cluster Manager

• Experience supporting AI/ML frameworks (TensorFlow, PyTorch) on HPC systems

• Prior work on a DoD or Navy system administration contract, ideally in scientific or oceanographic computing

• DoD 8570/8140 IA Technical Level I certification, or willingness to get it soon after hire

Why Join VIRSIG? 

At VIRSIG, our mission is bigger than construction, technology, or infrastructure.  We serve those who serve, and we believe the work we do matters.  This role offers the opportunity to lead meaningful projects, shape operational standards, mentor strong teams, and help build a company grounded in ownership, excellence, service, and purpose. 

VIRSIG’s “Why”

At VIRSIG, we believe that service to others can change the world. We believe that those who serve with strong morals and character can inspire others to do the same and overcome obstacles and challenges that many may see as insurmountable. We believe that it is our duty to defend, protect, and serve those that uphold our nation’s values. If you’re driven and looking for a place to grow, come join us.

VIRSIG’s Core Values

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

VIRSIG offers eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, professional development assistance, as well as participation in a 401(k) plan with company match. Salary will be commensurate with experience.

VIRSIG is proud to be an equal employment workplace. Individuals seeking employment at VIRSIG are considered without regards to age, ancestry, color, gender (including pregnancy, childbirth, or related medical conditions), gender identity or expression, genetic information, marital status, medical condition, mental or physical disability, national origin, protected family care or medical leave status, race, religion (including beliefs and practices or the absence thereof), sexual orientation, military or veteran status, or any other characteristic protected by federal, state, or local laws.

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