Senior HPC Linux Systems Engineer (E)

Requisition Id 15958 

 

Overview

 

Oak Ridge National Laboratory (ORNL) is seeking a Senior HPC Linux Systems Engineer to serve as a technical leader supporting some of the most advanced computing environments in the world.

This evergreen posting represents multiple potential openings for senior-level roles across ORNL’s high-performance computing ecosystem.

Senior HPC Linux Systems Engineers are recognized experts who lead the design, implementation, and optimization of complex HPC infrastructure. They manage large-scale technical projects, guide technical direction for their teams, and serve as trusted advisors to scientific and operational leadership across ORNL.

 

Major Duties and Responsibilities

 

• Provide technical leadership in the design, integration, and administration of large-scale Linux-based HPC clusters, high-speed networks, and storage systems.
• Lead medium to large technical projects, coordinating requirements, schedules, and deliverables across internal and external stakeholders.
• Architect and deploy advanced infrastructure solutions supporting exascale-class and mission-critical computing environments.
• Serve as a technical mentor for HPC engineers, guiding best practices in automation, performance tuning, and system security.
• Develop, implement, and maintain configuration management and automation frameworks (e.g., Ansible, Puppet, Salt) to enhance reliability and reproducibility.
• Perform advanced system performance analysis, troubleshooting, and optimization, ensuring system scalability and long-term sustainability.
• Manage critical vendor and partner relationships, representing ORNL’s technical requirements during procurement, integration, and system acceptance.
• Contribute to strategic planning and technology roadmaps, influencing unit goals and technical direction.
• Collaborate closely with scientists, researchers, and IT specialists to align infrastructure capabilities with research and security objectives.
• Ensure compliance with DOE cybersecurity standards, configuration baselines, and operational policies.
• Author technical documentation, present internal briefings, and communicate complex issues and resolutions to management and stakeholders.
• Participate in on-call rotations, maintenance windows, and incident response as needed to support 24x7 operations.

 

Basic Qualifications

 

• Bachelor’s degree in computer science, engineering, or a related technical field.
• A minimum of 8 years of relevant experience in Linux systems administration or HPC systems engineering.

 

Preferred Qualifications

 

• Demonstrated experience leading the design and deployment of HPC or large-scale distributed computing systems.
• Expertise with batch schedulers (SLURM, PBS, LSF) and parallel file systems (Lustre, GPFS/Spectrum Scale).
• Proven ability to lead technical projects from concept through implementation, balancing technical depth with project delivery.
• Strong proficiency in automation and infrastructure-as-code frameworks (Ansible, Puppet, Salt).
• Advanced scripting or programming skills (Python, Bash, Go) for automation and operational tooling.
• In-depth understanding of high-speed interconnects (InfiniBand, Slingshot, Ethernet) and storage architectures.
• Experience managing identity and access management systems, including MFA, SSO, and zero-trust frameworks (PingFederate, RSA SecureID, Entra ID).
• Experience integrating virtualization or containerization solutions (VMware, KVM, Apptainer, Podman) into HPC environments.
• Ability to manage client and stakeholder relationships across multiple directorates and technical disciplines.
• Excellent written and verbal communication skills, including the ability to present complex technical concepts to diverse audiences.
• Proven ability to influence technical strategy and mentor staff in a collaborative research environment.

 

Special Requirement

This position requires the ability to obtain and maintain clearance from the Department of Energy. As such, this position is a Workplace Substance Abuse (WSAP) testing designated position. WSAP positions require passing a pre-placement drug test and participation in an ongoing random drug testing program.

 

About ORNL

As a U.S. Department of Energy (DOE) Office of Science national laboratory, ORNL has an impressive 80-year legacy of addressing the nation’s most pressing challenges. Our team is made up of over 7,000 dedicated a