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Linux HPC Systems Engineer

Date: Nov 14, 2022

Location: Oak Ridge, TN, US, 37830

Company: Oak Ridge National Laboratory

Requisition Id 9493 


The Information Technology Services Division in the Business Services Directorate at the Oak Ridge National Laboratory is seeking qualified applicants for a Linux HPC Systems Engineer position in the Research and Development Systems Engineering group.  The R&D Systems Engineering group exists to facilitate lab goals through systems engineering, integration, and support for the research community at ORNL.  We run clusters, servers, workstations, and other services where science happens at the lab.


Our Team:

We are responsible for facilitating R&D projects.   We provide design, deployment, optimization, monitoring, and tooling support across multiple clustered infrastructures for the research organizations that we support.  We support clusters that range in scope from just a handful of nodes to 40,000+ cores.


What does our ideal teammate look like and what will you be doing?

Our primary goal is to partner with research organizations to enable research excellence and delivery at ORNL.  We work with other clustered computing and HPC groups to help research programs identify the best solutions for their needs.  When we build environments for our customers, you will work with our team to design, implement and maintain the systems for our customers from inception to retirement.


This role will advocate and promote HPC and clustered computing services to researchers who process large data sets and/or develop code as a part of their project.  You will be responsible for the availability, performance, scalability, and security of production systems.  You should have a strong desire to push the envelope and identify new technologies and opportunities and be able to communicate the potential benefits of those choices to others within the team and our research partners.  We heavily utilize automation and monitoring solutions to minimize our day-to-day maintenance and are always looking for opportunities to optimize system management practices or system performance.  As the primary SMEs for these systems, you will work with technical POCs for the programs that we support to install and help tune the performance of various scientific toolsets.  You should be a collaborative and energetic team member who thrives on the opportunity to build trust and credibility, and ultimately become a trusted advisor to our research teams. 


We optimize our workflows and monitoring solutions to take advantage of our 24/7 operations staff, which significantly reduces the need for off-hours support. We also offer a flexible work schedule and utilize Email, Jira, Confluence, Teams, Slack, and other collaboration solutions to stay in contact. 


Basic Requirements:

  • Bachelor's degree in Computer Science (or related field) and five years of relevant work experience (or an equivalent combination of education and work experience).
  • 3 years of experience managing UNIX/Linux Systems.  
  • 2 years’ experience utilizing configuration management and automation tools such as Git, Jenkins, Ansible, or Puppet.
  • Moderate fluency in at least one scripting language such as Bash, Python, or equivalent.
  • Experience performing advanced troubleshooting and system administration with Linux Servers.
  • Experience supporting large data systems.
  • Demonstrated capabilities to work in a dynamic environment.
  • Ability to obtain and maintain a DOE Security Clearance.


Preferred Qualification:

  • Strong knowledge of multiple operating systems.
  • Experience with Centos/RHEL, Ubuntu, VMware
  • Understanding of HPC platforms to support users with job submissions and troubleshooting.
  • Experience building and running containerized applications in an HPC environment.
  • Experience managing systems utilizing GPU/Cuda clusters for AI/ML and/or image processing.
  • Knowledge of networking fundamentals including TCP/IP, traffic analysis, common protocols, and network diagnostics.
  • Experience with performance and diagnostic tools for benchmarking, analysis and tuning of systems, networking, and storage.
  • Experience with Grafana, CheckMK, Nagios, Zabbix, SolarWinds, Ganglia, or other network and device monitoring systems.
  • Previous experience working in a government, scientific or other highly technical environment.
  • Good documentation skills, including ability to prepare simple documentation web pages.


This position is a Workplace Substance Abuse Program (WSAP) testing designated position, which requires passing a pre-placement drug test and participation in an ongoing random drug testing program in which employees are subject to being randomly selected for testing. The occupant of this position will also be subject to an ongoing requirement to report to ORNL any drug-related arrest or conviction or receipt of a positive drug test result.



Moving can be overwhelming and expensive. UT-Battelle offers a generous relocation package to ease the transition process. Domestic and international relocation assistance is available for certain positions. If invited to interview, be sure to ask your Recruiter (Talent Acquisition Partner) for details.


This position will remain open for a minimum of 5 days after which it will close when a qualified candidate is identified and/or hired.

We accept Word (.doc, .docx), Adobe (unsecured .pdf), Rich Text Format (.rtf), and HTML (.htm, .html) up to 5MB in size. Resumes from third party vendors will not be accepted; these resumes will be deleted and the candidates submitted will not be considered for employment.

If you have trouble applying for a position, please email

ORNL is an equal opportunity employer. All qualified applicants, including individuals with disabilities and protected veterans, are encouraged to apply.  UT-Battelle is an E-Verify employer.

Nearest Major Market: Knoxville