High Performance Computing (HPC) Engineer TS/SCI with Polygraph Help tackle some of the hardest problems in national security by optimizing complex compute systems built for speed, scale, and scientific insight. As an HPC Engineer , you'll support mission-critical operations across GPU- and CPU-based clusters, enabling advanced analytics, modeling, and simulations on some of the most powerful systems in government computing. What You'll Do: Administer, monitor, and maintain High Performance Computing (HPC) environments including Cray systems, commodity clusters, and Nvidia GPU nodes

Support users in deploying jobs, managing queues, and extracting insights via MPI/OpenMPI-based applications

Lead performance tuning, diagnostics, and system-level troubleshooting across HPC infrastructure

Perform OS and firmware upgrades, software patching, and cluster health checks

Optimize job submissions, workflows, and data throughput in a Linux-based environment using SLURM

Collaborate with analysts, engineers, and data scientists to ensure HPC resources deliver fast, accurate results

Act as a bridge between specialty code users and compute hardware, ensuring analytic applications run efficiently

Conduct ongoing performance analysis and produce reports on system operations and job efficiency

Escalate hardware/software issues as needed and work closely with vendor support teams

Contribute to enhancements in tooling, automation, and service offerings across the HPC environment

What You Bring: 6+ years of hands-on experience supporting or administering HPC environments

Deep familiarity with Linux , MPI/OpenMPI , SLURM , and clustered compute systems

Proven ability to integrate and automate across disparate systems

Previous experience managing environments with GPUs , CUDA , and high-speed networking is preferred

Background in systems architecture, operations, and performance optimization

Experience with software integration or scientific/engineering workflows is a plus

Knowledge of the Sponsors security requirements and operational environment

Active TS/SCI clearance with polygraph required

Eligibility to receive privileged access rights

What We Offer: 100% Employer-Paid Health Coverage (Medical, Dental, Vision)

401(k)/IRA with Generous Matching

Paid Vacation, Sick Leave, and Federal Holidays

Company-paid Life Insurance and AD&D

Short-Term and Long-Term Disability Coverage

Access to Training & Professional Development

Employee Assistance Program (EAP)

If you're ready to bring world-class compute power to world-class missions, wed love to hear from you.