Oak Ridge National Laboratory
Company Website
Full Time
HPC Engineer, User Assistance, Associate Level

The Organization:

The National Center for Computational Sciences (NCCS) at the Oak Ridge National Laboratory (ORNL) is responsible for providing computational resources at extreme scales for science.  NCCS is home to some of the fastest supercomputers and storage systems in the world, e.g., the 27 petaflops Titan system, the 200 petaflops Summit system, the 250 petabytes GPFS-based Alpine parallel file system, and the disk/tape HPSS archival storage system.  NCCS serves multiple agencies including DOE, NOAA, and the Air Force.  The NCCS also supports the center’s Quantum Computing User Program (QCUP) which provides access to state-of-the-art quantum computing resources.

The Team:

The NCCS User Assistance (UA) Group provides technical support to the center’s advanced computing resources including high-performance computing (HPC) and Quantum, generates documentation about NCCS systems, and develops and delivers training to users of the center’s resources. NCCS staff members are also responsible for developing tools and technical solutions for users of these resources.  NCCS User Assistant specialists also serve as ambassadors for users of these resources and the rest of the organization.

Major Duties and Responsibilities:

The role comprises the following primary functions:

  • Take technical ownership of user reported problems and provide hands-on support for scientific applications and libraries and users of high-performance computing, clusters, quantum, and other advanced computing resources.
  • Compile and debug large science and engineering applications.
  • Identify and resolve system-level bugs in conjunction with other technical staff.
  • Work with vendors to resolve issues and implement changes as necessary.
  • Install third-party software applications and tools and provide documentation for usage.
  • Develop and execute system tests to ensure newly deployed systems can support user workloads.
  • Proactively ensure that users have up-to-date information about the system, including any changes and their impact on the users. User Support staff are very involved in researching and developing documentation and reference material during system early-use and upgrade phases, as well as maintaining them throughout system operation.
  • Participate in the development, maintenance, and delivery of training and outreach materials to users.
  • Respond to general administrative questions (e.g., system status, requests for accessor special accommodation, etc)
  • Implement special projects as requested (e.g., metrics, cyber security, policy discussions).
  • Actively participate and advocate for users during planning of system configuration, policy creation, outages, and other user impacting events.

Minimum Requirements:

  • A Bachelor’s degree in computer science or related field or equivalent experience
  • Requires practical experience with multiple programming languages and technologies including several of the following:
    • Fortran
    • C
    • C++
    • Perl
    • Python
    • Shell scripting (e.g., bash, ksh, etc.) in a Linux or Unix environment

Desired Experience/Skills:

  • BS and 2+ years of relevant experience or MS and 1+ year of relevant experience
  • Prior experience providing user support
  • Experience building and installing scientific software and other 3rd party software applications on HPC systems
  • Experience with HPC schedulers and resource managers
  • Experience executing scientific software on HPC systems
  • Experience writing user documentation
  • Experience developing and delivering training for users
  • Strong technical and analytical skills
  • Strong verbal and written communication skills
  • Maintains the highest level of professionalism at all times when interacting with internal and external customers
  • Demonstrates a high-energy, positive attitude and commitment to quality customer service
  • Contributes to a positive team environment within the center by demonstrating a strong work ethic, effectively communicating with others, and proactively anticipating center and user needs
  • Experience coordinating and running support teams
    Understanding of the requirements of a DOE, DoD, and/or NSF HPC center

ORNL Benefits:

ORNL offers competitive pay and benefits programs to attract and retain talented people. The laboratory offers many employee benefits, including medical and retirement plans and flexible work hours, to help you and your family live happy and healthy. Employee amenities such as on-site fitness, banking, and cafeteria facilities are also provided for convenience.

Other benefits include:

Prescription Drug Plan, Dental Plan, Vision Plan, 401(k) Retirement Plan, Contributory Pension Plan, Life Insurance, Disability Benefits, Generous Vacation and Holidays, Parental Leave, Legal Insurance with Identity Theft Protection, Employee Assistance Plan, Flexible Spending Accounts, Health Savings Accounts, Wellness Programs, Educational Assistance, Relocation Assistance, and Employee Discounts.


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.