HPC Infrastructure Engineer - Classified Environment

Oak Ridge National Laboratory•Oak Ridge, TN

About The Position

The Field Intelligence Operations Division seeks an experienced High-Performance Computing (HPC) Infrastructure Engineer to design, deploy, integrate, and sustain advanced computing infrastructure for classified Department of War, Department of Energy, and Intelligence Community missions. In a national laboratory environment, the engineer will provide expertise in HPC architecture, GPU-accelerated computing, Linux clusters, high-performance storage and networking, and infrastructure automation, delivering secure, scalable, reliable capabilities that comply with federal cybersecurity requirements. The role supports classified HPC capabilities for national security by strengthening computational capacity, infrastructure resilience, cybersecurity compliance, and operational readiness, while enabling emerging technologies and mission-driven computing requirements. The engineer will collaborate with cybersecurity and Information Assurance teams and mission, program management, and technical stakeholders. ORNL expects employees to align their behavior and work with its values of Impact, Integrity, Teamwork, Safety, and Service and to foster a respectful workplace and equal opportunity.

Requirements

Bachelor’s degree in computer science, computer engineering, information technology, or a related technical discipline, and at least five years of relevant experience, or an equivalent combination of education and experience.
Demonstrated experience designing, deploying, administering, or sustaining HPC clusters or large-scale Linux computing infrastructure.
Strong technical knowledge of Linux systems, cluster management, GPU computing, high-performance networking, and enterprise storage.
Experience with infrastructure automation, scripting, system troubleshooting, and performance optimization.
Ability to develop technical documentation, evaluate infrastructure requirements, and independently resolve complex engineering challenges.
Active TS, Q, or TS/SCI clearance is required for consideration; ability to obtain and maintain required federal security clearances and access authorizations.
Ability to obtain and maintain a DOE Sensitive Compartmented Information (SCI) clearance. The position is subject to pre-placement and ongoing random drug testing; random polygraph testing may also apply due to the SCI requirement.

Nice To Haves

Advanced degree in a related technical field and 10 or more years of relevant infrastructure engineering experience.
Experience supporting classified computing environments at a national laboratory, Department of War, Department of Energy, or Intelligence Community organization.
Active DOE Q, DoD Top Secret, or TS/SCI clearance, as applicable.
Experience with NVIDIA GPU platforms, including H100/H200, accelerated computing, and AI/ML infrastructure.
Proficiency with HPC technologies such as Slurm, InfiniBand, RDMA, Lustre, GPFS, BeeGFS, and container technologies.
Advanced Linux administration experience, including Red Hat Enterprise Linux, Ansible, Python, Bash, and automated system provisioning.
Familiarity with NIST RMF, NIST SP 800-53, ICD 503 where applicable, DISA STIGs, system accreditation, and ATO processes.
Experience supporting infrastructure modernization, data center integration, capacity planning, and lifecycle sustainment.

Responsibilities

Design, deploy, integrate, and sustain HPC clusters, GPU-accelerated platforms, high-density servers, and supporting infrastructure to meet mission performance, scalability, and availability needs.
Configure, maintain, and optimize Linux HPC environments, including cluster provisioning, workload scheduling, performance monitoring, troubleshooting, and lifecycle management.
Engineer and integrate high-performance storage, parallel file systems, high-speed interconnects, and associated data center infrastructure.
Work with cybersecurity and Information Assurance teams to implement security controls, system hardening, configuration management, vulnerability remediation, and Risk Management Framework requirements supporting Authority to Operate processes.
Develop and implement infrastructure automation, configuration management, and technical improvements to improve operational efficiency, reliability, and mission readiness.
Translate mission requirements into infrastructure designs, technical specifications, capacity plans, procurement recommendations, and implementation strategies.
Partner with Department of War, Department of Energy, Intelligence Community, program management, and technical stakeholders to address engineering challenges, identify infrastructure risks, and deliver mission-critical computing capabilities.
Align behaviors, priorities, and interactions with ORNL’s values of Impact, Integrity, Teamwork, Safety, and Service, and promote a respectful workplace and equal opportunity.