High Performance Computing (HPC) Cluster Administrator – Contract Position
At Lightbridge, we’re pioneering advanced nuclear fuel technology that’s designed to make reactors safer, more efficient, and more responsive to global energy needs. Our mission is bold—and we’re looking for equally bold thinkers to help us bring it to life. If you thrive at the intersection of engineering and regulatory strategy, this is your opportunity to help shape the future of clean energy.
About the Role: High Performance Computing (HPC) Cluster Administrator – Full-Time or Contract Position
As our HPC Cluster Administrator, you will manage and optimize a high-performance computing (HPC) environment to support advanced nuclear simulations and engineering workflows. This role ensures secure, efficient, and compliant operations in accordance with ITAR, Export Control, and CMMC Level 2 requirements.
What You’ll Be Doing
- Manage HPC user accounts, group memberships, and access privileges following least privilege principles.
- Implement and enforce multi-factor authentication (MFA) for privileged and non-privileged accounts.
- Maintain personnel access control for virtual and physical HPC resources.
- Manage HPC user accounts, group memberships, and access privileges following least privilege principles.
- Implement and enforce multi-factor authentication (MFA) for privileged and non-privileged accounts.
- Maintain personnel access control for virtual and physical HPC resources.
- Deploy and configure Slurm for workload and queue management.
- Implement HPC OnDemand for GUI-based job submission for less experienced Linux users.
- Maintain baseline configurations and enforce secure configuration settings.
- Install, upgrade, and maintain scientific software (e.g., BISON, MCNP, SCALE) and ensure compliance with licensing and export control.
- Maintain software verification and version control for nuclear software quality assurance.
- Collaborate with the Quality Assurance Manager to develop and maintain a Software Quality Assurance Plan (SQA).
- Provide role-based security training for HPC users and administrators.
- Conduct awareness sessions on ITAR, export control, and insider threat indicators.
- Participate in incident response planning and testing.
- Monitor system for vulnerabilities and apply timely remediation.
- Coordinate with external colocation partners and vendors to ensure compliance with ITAR and CMMC security requirements.
- Create and maintain technical documentation, user guides, and compliance artifacts.
Who You Are
- Strong experience with Linux-based HPC environments, Slurm, and cluster management tools.
- Knowledge of ITAR regulations, Export Control, and CMMC Level 2 security practices.
- Familiarity with NIST SP 800-171r3 security families: Access Control, Audit & Accountability, Configuration Management, Identification & Authentication, System & Communications Protection.
- Experience implementing FIPS-validated cryptography, MFA, and secure remote access.
- Ability to develop compliance documentation (SSP, POA&M) and support third-party assessments.
- Excellent communication skills for training and collaboration with internal teams and external partners.
- Experience with nuclear simulation codes (BISON, MCNP, SCALE).
- Familiarity with Supply Chain Risk Management and vendor compliance verification.
- Prior experience in regulated environments (DOE, DoD, or similar).
Please submit your resume and cover letter outlining your qualifications and experience to careers@ltbridge.com.
Resumes from third-party vendors will not be accepted.
About Lightbridge:
Lightbridge is developing Lightbridge Fuel™, an advanced metallic nuclear fuel for use in water-cooled reactors, including in the existing fleet of Nuclear Power Plants and in future water-cooled Small Modular Reactors.
Lightbridge Fuel consists of a metallic uranium-zirconium alloy fuel core and zirconium-alloy cladding which are co-extruded to form monolithic metallic fuel rods with a multi-lobed and helically twisted geometry. The design of Lightbridge Fuel gives it inherently superior technical performance in several key areas as compared to conventional commercial nuclear fuel, including lower fuel operating temperatures, enhanced coolability, and a more robust mechanical design. Lightbridge Fuel simultaneously offers improvements in safety, fuel performance, operational flexibility, power plant economics, and proliferation resistance.
Lightbridge has entered into two long-term framework agreements with Battelle Energy Alliance LLC, the United States Department of Energy’s operating contractor for Idaho National Laboratory, the United States' lead nuclear energy research and development laboratory. DOE’s Gateway for Accelerated Innovation in Nuclear program has twice awarded Lightbridge to support the development of Lightbridge Fuel over the past several years. Lightbridge is participating in two university-led studies through the DOE Nuclear Energy University Program at Massachusetts Institute of Technology and Texas A&M University. An extensive worldwide patent portfolio backs Lightbridge’s innovative fuel technology.
Lightbridge Corporation is a publicly traded company headquartered in Reston, Virginia, and is included in the Russell 2000® Index and the Russell 3000® Index. For more information, please visit www.ltbridge.com.
Lightbridge is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, pregnancy, sexual orientation, gender identity, national origin, age, protected veteran status, or disability status.
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