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Senior Linux HPC Systems Engineer

Job in Knoxville, Knox County, Tennessee, 37955, USA
Listing for: Cadre5
Full Time position
Listed on 2026-02-16
Job specializations:
  • IT/Tech
    Systems Engineer, Cloud Computing, IT Support
Salary/Wage Range or Industry Benchmark: 80000 - 100000 USD Yearly USD 80000.00 100000.00 YEAR
Job Description & How to Apply Below

Location: Knoxville, TN

Job : 477

# of Openings: 1

Founded in 1999 in the beautiful Smoky Mountains of East Tennessee, Cadre5 provides innovative technical solutions to our customers locally and nationally. Our Cadre5 Lab Partners division has partnered with the Information Technology Services Directorate (ITSD) at Oak Ridge National Laboratory (ORNL) to recruit a Senior Linux HPC Systems Engineer to design, operate and maintain clusters, servers, and workstations supporting services where science happens at ORNL!

ORNL delivers scientific discoveries and technical breakthroughs needed to realize solutions in energy and national security and provides economic benefit to the nation. This premier research institution located near Knoxville in Oak Ridge, TN, addresses national needs through impactful research and world‑leading research centers.

This is a full-time, permanent position that follows a hybrid model. Minimum of 3 days on-site a week.

Why Cadre5?
  • Working with highly talented team members
  • Excellent medical insurance, including employer‑paid benefits
Job Responsibilities:
  • 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.
  • Ensure the availability, performance, scalability, and security of production systems.
  • Leverage automation and monitoring solutions that minimize our day‑to‑day maintenance and scout opportunities to optimize system management practices or system performance.
  • Collaborate with technical POCs for the programs that we support to install and help tune the performance of various scientific toolsets.
  • Optimize both workflows and monitoring solutions to take advantage of our 24/7 operations staff, which significantly reduces the need for off‑hours support. We use Email, Jira, Confluence, Teams, Slack, and other collaboration solutions to stay in contact.
  • Deliver ORNL’s mission by aligning behaviors, priorities, and interactions with our core values of Impact, Integrity, Teamwork, Safety, and Service. Promote equal opportunity by fostering a respectful workplace – in how we treat one another, work together, and measure success.
Basic Qualifications:
  • A BS degree in computer science, computer engineering, information technology, information systems, science, engineering, business, or a related discipline and a minimum of eight (8) to twelve (12) years of aligned professional experience is required for consideration. An overall combination of equivalent education and experience may be considered.
  • Masters’ holders should have a minimum of seven (7) to ten (10) years of relevant and aligned experience.
  • PhD holders should have a minimum of four (4) to six (6) years of relevant and aligned experience.
  • Five (5) or more years with managing UNIX/Linux Systems.
  • Three (3) or years of proven experience with configuration management and automation tools such as Git, Jenkins, Ansible, or Puppet.
  • Moderate proficiency in at least one scripting language such as Bash, Python, or others.
  • Experience performing advanced troubleshooting and system administration with Linux Servers.
  • Experience supporting large data systems.
  • A strong desire to innovate 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.
  • A collaborative and upbeat approach to thrive on the opportunity to build trust and credibility and ultimately become a trusted advisor to our research teams.
  • The ability to obtain and maintain a Department of Energy "Q" clearance is required. This requires US Citizenship.
Preferred Qualifications:
  • Active DOE Q, active DOD Top Secret, or active DOD TS/SCI clearance is heavily preferred for consideration.
  • Solid understanding of multiple operating systems and cluster technologies.
  • Experience with Rocky/Centos/RHEL, Ubuntu, VMware.
  • Understanding of HPC platforms to support users with SLURM job submissions and troubleshooting.
  • Experience building and running containerized applications in an HPC environment.
  • Experience with multiple deployment mechanisms like Diskless, Warewulf, and traditional deployment (cobbler, PXEboot,…
Position Requirements
10+ Years work experience
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