HPC Systems Engineer

Phoenix is seeking a High Performance Computing (HPC) Systems Engineer to support the build, configuration, and sustainment of advanced Linux-based HPC cluster environments. This role is critical to enabling distributed compute workloads, scientific simulations, and GPU-accelerated processing within a secure research environment.

You will work in a cluster-scale computing environment where performance optimization, scheduler configuration, and distributed workload execution are key to mission success.

What You’ll Do

• Configure, deploy, and maintain multi-node Linux HPC clusters
• Administer and optimize workload schedulers (e.g., Slurm, PBS)
• Troubleshoot distributed compute workloads across cluster environments
• Perform performance analysis across compute, storage, and network layers
• Support GPU-enabled workloads and CUDA-based processing
• Develop and maintain automation scripts and operational tooling
• Assist in cluster provisioning and node deployment (e.g., xCAT, Warewulf)
• Support containerized workloads within HPC environments, Our technical competencies include Big Data analytics (batch and streaming), Cloud Computing infrastructure, multi-INT visualization, and enterprise architectures. We support operational missions (All-Source, Financial, CND) and serve as Product Owners for our open-source research initiatives.

• Active TS/SCI clearance
• Ability to work onsite in Charlottesville, VA
• 6+ years of Linux systems administration experience
• Hands-on experience with HPC clusters or distributed compute environments
• Experience with workload schedulers such as:
• Slurm
• PBS / PBS Pro
• Torque or similar
• Strong command-line Linux administration skills (RHEL preferred)
• Experience with scripting or automation (Bash, Python, or similar)
• Ability to obtain DoD 8140 (8570) IAT Level II certification, * Experience administering multi-node HPC cluster environments
• Familiarity with parallel/distributed file systems (Lustre, BeeGFS, GPFS)
• Experience with MPI, OpenMP, or other parallel computing frameworks
• Experience supporting GPU compute environments (CUDA)
• Familiarity with container technologies:
• Docker, Podman, Singularity/Apptainer
• Experience with configuration management tools (Ansible, Puppet)
• Background supporting research labs, university HPC, or defense environments

Technical Environment

You’ll work with cutting-edge technologies, including:

• Linux-based HPC clusters
• High-performance networking (RDMA, InfiniBand)
• Distributed compute frameworks (MPI, OpenMP)
• GPU-enabled processing (CUDA)
• Cluster provisioning tools (xCAT, Warewulf), * HPC cluster administration
• Research computing or university HPC centers
• National labs or scientific computing programs
• Defense or intelligence community computing environments, * Scheduler expertise (Slurm, PBS, etc.)
• Linux administration in multi-node environments
• Troubleshooting distributed workloads
• Automation and scripting experience

Medical, Dental, Vision Insurance - 100% Company Paid Premiums

STD, LTD, and Life Insurance - 100% Company paid

401K - Automatic 10% company contribution; no matching required

PTO - 4 weeks/year

Holidays - 11 paid/year

Birthdays off with pay

Referral Bonuses - Upfront AND Annually Recurring

Open Source Bonuses - Contribute to our Github projects

Professional Development - Paid training, Certifications, and Enrichment

Phoenix Operations Group is a high-end engineering services company dedicated to protecting and advancing our national cyber resources. As a small company, we rely on innovation to continually advance our employees’ skills and provide game-changing solutions to our customers.