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Senior Linux HPC Systems Engineer

Date: May 3, 2022

Location: Oak Ridge, TN, US, 37830

Company: Oak Ridge National Laboratory

Requisition Id 7210 


Oak Ridge National Laboratory is the largest US Department of Energy science and energy laboratory, conducting basic and applied research to deliver transformative solutions to compelling problems in energy and security.



The Information Technology Services Division in the Business Services Directorate at the Oak Ridge National Laboratory is seeking qualified applicants for a Senior 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 within secure environments.  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 minimize our day-to-day maintenance and you should always be 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 operations staff, which significantly reduces the need for off-hours support. We also offer a flexible work schedule and utilize collaboration solutions to stay in contact. This position requires onsite presence. 


Basic Requirements:

  • Bachelor's degree in Computer Science (or related field) or combined work experience plus education of 8 years. An equivalent combination of education and experience will be considered.
  • A minimum of 5 years of experience managing UNIX/Linux Systems. 
  • A minimum of 2 years 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 in an HPC environment.
  • Demonstrated capabilities to work in a dynamic environment.
  • This position requires the ability to obtain and maintain a 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.


Preferred Qualifications :

  • A minimum of 10 years of experience managing UNIX/Linux Systems.
  • Active DOE Q clearance with TS/SCI.
  • Strong knowledge of multiple operating systems.
  • Experience with Centos/RHEL 7+, Centos/RHEL 8+, Ubuntu 18+
  • Understanding of HPC platforms to support users with job submissions and troubleshooting.
  • 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.



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