Careers

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’re inspired to apply your engineering expertise to make real-world impact, this is your opportunity to help shape the future of clean energy.

About the Role: Nuclear Design Engineer

As a Nuclear Design Engineer, you’ll be at the heart of Lightbridge’s fuel development program. Your work will directly influence the design, modeling, and validation of fuel assemblies that are redefining industry standards. This role is a key contributor to our technical excellence and regulatory success.

What You’ll Be Doing

• Project Design: Plan, lead, and perform core design work and neutronics analysis for licensing qualification and commercialization of Lightbridge fuel within various water-cooled reactors, ensuring compliance with regulatory standards, operational limits, and organizational goals.
• Technical Leadership: Provide advanced engineering solutions to complex or ambiguous technical challenges associated with the neutronics analysis of the Lightbridge fuel design for various applications.
• Technical Ability: Develop, document, and maintain software models of the Lightbridge fuel design for multiple lattice and core design applications using standard neutronics analysis software, including deterministic and Monte Carlo type codes.
• Project Management: Organize, plan, and monitor neutronics engineering activities and deliverables between multiple project teams and administrative staff, balancing project scope, budgets, and schedule.
• Documentation and Review: Perform, review, and approve calculations and other technical documents within the scope of core design and neutronics analysis of the Lightbridge fuel design.
• Communication: Interface with internal leadership and multi-functional project teams, regulatory agencies, vendors, and utility customers to develop technical solutions, obtain approvals for projects, or provide technical information to advance the development, licensing, and commercialization of Lightbridge fuel.
• Research and Development: Introduce new technologies or methods to optimize the design, safety, and performance of Lightbridge fuel, and improve the efficiency of internal technical or administrative processes.
• Mentorship: Provide training and mentorship to junior engineers to promote technical proficiency and engineering best practices relating to core design and neutronics analysis.

Who You Are

• Principle Engineer: BS in Nuclear Engineering + 14 years of relevant experience, or MS + 12 years, or PhD + 10 years of relevant experience
• Senior Engineer: BS in Nuclear Engineering + 5 years of relevant experience, or MS + 4 years, or PhD + 3 years of relevant experience  
• Experience with lattice physics modeling and core design simulation software with a preference on utilizing HELIOS/PRESTO, CASMO/SIMULATE, SCALE/PARCS
• Experience with Monte Carlo simulation modeling, preferably using at least one of the following codes: MCNP, KENO, SERPENT
• Working knowledge of neutronics/core design, thermal-hydraulics, fuel performance, and experience combining and integrating results from analyses across these areas

Perks & Benefits

• Competitive salary and performance bonuses including cash and equity awards
• Remote work culture with potential travel
• 100% company-paid health, dental, and vision coverage
• 401(k) with 100% company match
• Generous Time Off and Family Care
• Up to 32 hours per years of professional development course fees covered

Ready to help license the next generation of nuclear fuel? Join Lightbridge and be part of something extraordinary.

Please submit your resume and cover letter outlining your qualifications, experience, and salary expectations 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.

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’re inspired to apply your engineering expertise to make real-world impact, this is your opportunity to help shape the future of clean energy.

About the Role: Licensing Engineer

As a Licensing Engineer, you’ll be instrumental in guiding Lightbridge’s fuel technology through the complex regulatory landscape. Your work will ensure our innovations meet the highest safety and compliance standards, enabling deployment across commercial reactors worldwide. This role is a critical bridge between engineering, policy, and public trust.

What You’ll Be Doing

• Developing and leading topic specific regulatory engagements and/or submittals.
• Developing regulatory analysis and managing regulatory requirements for specific topics.
• Reviewing technical information provided in submittals to ensure alignment between Lightbridge’s regulatory request and the technical bases provided.
• Communicating licensing approach, and regulatory requirements to technical and stakeholder organizations.
• Preparing technical and licensing teams for and leading receipt of topic specific regulatory audits.
• Drafting or supporting the drafting of, and coordinating technical & licensing teams’ formal responses to regulatory requests for additional information.
• Manage schedules and resources for assigned scopes of work.
• Maintaining up-to-date understanding of regulatory frameworks and guidance.

Who You Are

• BS in Nuclear Engineering or related field + 5 years of relevant experience, or MS + 4 years, or PhD + 3 years of relevant experience
• Experience engaging with at least one of the following major regulatory agencies in a licensing or regulatory affairs capacity: U.S. NRC, CNSC, ONR, ASNR, FANR, DOE, NNSA, NR, and state-level nuclear regulator.
• Hands-on experience of operating reactors and/or fuel production facilities.
• Working experience with nuclear fuel designs and associated regulatory submittals.
• Understanding of reactor physics, thermal hydraulics, safety analysis, fuel cycle licensing, and/or nuclear fuel design
• Familiarity with ASME NQA-1 quality assurance standards

Perks & Benefits

• Competitive salary and performance bonuses including cash and equity awards
• Remote work culture with potential travel
• 100% company-paid health, dental, and vision coverage
• 401(k) with 100% company match
• Generous Time Off and Family Care
• Up to 32 hours per years of professional development course fees covered

Ready to help license the next generation of nuclear fuel? Join Lightbridge and be part of something extraordinary.

Please submit your resume and cover letter outlining your qualifications, experience, and salary expectations 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.

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’re inspired to apply your engineering expertise to make real-world impact, this is your opportunity to help shape the future of clean energy.

About the Role: Nuclear Fuel Mechanical Engineer (FEA)

As a Nuclear Fuel Mechanical Engineer focused on nuclear fuel thermo-mechanical performance, you’ll play a critical role in advancing Lightbridge’s cutting-edge fuel technology. Your work will directly impact the safety, performance, and regulatory readiness of our fuel assemblies—bringing real value to the future of nuclear energy.

What You’ll Do

• Performing simulations & analyses to optimize and predict performance of  Lightbridge Fuel design for various reactor types for various fuel cycle objectives (e.g. improved safety margins, burnup extension, power uprates, load-follow operation, waste volume reduction).
• Developing, implementing, and benchmarking methods and models in fuel performance codes.
• Performing calculations and simulations to inform design, execution, and analysis of in-pile and out-of-pile experiments and other analyses performed by partner organizations.
• Performing independent reviews of fuel performance and finite element method (FEM) simulations and analyses performed by other Lightbridge staff or partner organizations, as necessary.
• Working collaboratively with other Lightbridge staff to determine engineering approach to simulations/analyses necessary to support development and licensing of Lightbridge Fuel.
• Documenting simulations and analysis in engineering reports.
• Reporting results of selected simulations/analyses in peer-reviewed or popular publications.
• Contributing to reports to support regulatory submittals of Lightbridge Fuel.

Who You Are

• Principle Engineer: BS in Nuclear Engineering + 14 years of relevant experience, or MS + 12 years, or PhD + 10 years of relevant experience
• Senior Engineer: BS in Nuclear Engineering + 5 years of relevant experience, or MS + 4 years, or PhD + 3 years of relevant experience
• Proficient in modeling and simulation using at least one of the modes/frameworks: BISON/MOOSE, ABAQUS, ANSYS, DEFORM, SOLIDWORKS.
• Skilled in both implicit and explicit FEM codes; multiple frameworks is preferred
• Experience developing thermal-mechanical simulations to support fuel performance analysis and core reloads
• Working knowledge of neutronics, core design, fuel performance, and/or seismic analysis

Perks & Benefits

• Competitive salary and performance bonuses including cash and equity awards
• Remote work culture with potential travel
• 100% company-paid health, dental, and vision coverage
• 401(k) with 100% company match
• Generous Time Off and Family Care
• Up to 32 hours per years of professional development course fees covered

Ready to help qualify and license the next generation of nuclear fuel? Join Lightbridge and be part of something extraordinary.

Please submit your resume and cover letter outlining your qualifications, experience, and salary expectations 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.

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’re inspired to apply your engineering expertise to make real-world impact, this is your opportunity to help shape the future of clean energy.

About the Role: Mechanical Engineer – Fuel Assembly Design

As a Principal or Senior Mechanical Engineer, you’ll drive CAD-based mechanical design and perform finite element analysis (FEA) to evaluate mechanical performance under a range of operating and accident scenarios. Your work will directly support fuel fabrication, regulatory readiness, and the advancement of clean energy technology.

What You’ll Be Doing

• Developing Lightbridge Fuel assembly and component designs and drawings, using CAD tools, for various reactor types.
• Performing (FEA) structural analysis of the fuel assemblies and components for various conditions (transport, storage, operation, seismic, etc.) in support of fabrication, operations and licensing.
• Developing designs and drawings tooling and other components used in fabrication and transport of Lightbridge Fuel.
• Performing or assisting in performing calculations or assessments of mechanical properties relevant for fabrication of Lightbridge Fuel.
• Performing FEA simulations of Lightbridge Fuel fabrication operations to assist in development and optimization of Lightbridge Fuel fabrication processes.

• Support procurement of software, hardware, and services supporting mechanical design and analysis, as needed.
• Communicating mechanical analysis outcomes to fuel engineering team within Lightbridge.
• Performing design, calculations, and simulations, as necessary, to inform design, execution, performance, and analysis of in-pile and out-of-pile experiments and other analyses.
• Performing independent reviews of fuel performance and finite element method (FEM) simulations and analyses performed by other Lightbridge staff or partner organizations, as necessary.

• Working collaboratively with other Lightbridge staff to determine engineering approach to simulations/analyses necessary to support development and licensing of Lightbridge Fuel.
• Documenting simulations and analysis in engineering reports.
• Reporting results of selected simulations/analyses in peer-reviewed or popular publications.
• Contributing to reports to support regulatory submittals of Lightbridge Fuel.

Who You Are

• Principle Mechanical Engineer: BS in Mechanical Engineering + 14 years of relevant experience, or MS + 12 years, or PhD + 10 years of relevant experience
• Senior Mechanical Engineer: BS in Mechanical Engineering + 5 years of relevant experience, or MS + 4 years, or PhD + 3 years of relevant experience
• Proven experience in CAD modeling and simulation for nuclear fuel assemblies and components for PWR and BWR reactors
• Proficiency with codes and frameworks such as ABAQUS, ANSYS, DEFORM, SOLIDWORKS, AUTODESK
• Skilled in both implicit and explicit FEM codes; multiple frameworks is preferred
• Strong background in thermal-mechanical simulation supporting fuel design and analysis
• Working knowledge of how fuel assembly and component mechanical design impacts and is impacted by neutronics/core design, thermal hydraulics, and in-reactor fuel performance

Perks & Benefits

• Competitive salary and performance bonuses including cash and equity awards
• Remote work culture with potential travel
• 100% company-paid health, dental, and vision coverage
• 401(k) with 100% company match
• Generous Time Off and Family Care
• Up to 32 hours per years of professional development course fees covered

Ready to help license the next generation of nuclear fuel? Join Lightbridge and be part of something extraordinary.

Please submit your resume and cover letter outlining your qualifications, experience, and salary expectations 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.

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’re inspired to apply your engineering expertise to make real-world impact, this is your opportunity to help shape the future of clean energy.

About the Role: Reactor Thermal Hydraulics Engineer

As a Principal or Senior Reactor Thermal Hydraulics Engineer, you will lead thermal-hydraulic design analyses that support the commercialization and licensing of Lightbridge Fuel across a range of water-cooled reactors. You will also contribute to the development of reactor design and safety application methodologies, and design of thermal-hydraulic experiments, playing a key role in shaping the future of nuclear energy.

What You’ll Be Doing

• Perform independent engineering design studies and verifications and lead design reviews in areas of expertise.
• Interface with engineering services suppliers to achieve project outcomes and address complex technical issues.
• Validate engineering computer programs for use with Lightbridge fuel, which includes resolving issues related to modeling bias and uncertainty.
• Participate in the development of reload licensing methodologies and assist in the regulatory review and approval process.
• Interface with customers to incorporate plant-specific and cycle-specific design input into reload engineering and transient analyses.
• Develop design procedures and implement processes to support reload licensing activities.
• Provide technical and project leadership in areas of expertise, and support other functions as needed within the organization.

Who You Are

• Principle Engineer: BS in Nuclear Engineering + 14 years of relevant experience, or MS + 12 years, or PhD + 10 years of relevant experience
• Senior Engineer: BS in Nuclear Engineering + 5 years of relevant experience, or MS + 4 years, or PhD + 3 years of relevant experience
• Experience in commercial LWR core and fuel design, with deep knowledge of two-phase flow and boiling heat transfer fundamentals
• Strong experience in fuel vendor or utility engineering, with a focus on reload engineering and plant licensing
• Expertise in the use of subchannel analysis codes, such as family of COBRA and VIPRE codes, or expertise with CFD analysis tool
• Familiarity with reactor safety codes such as RETRAN, RELAP5, and TRAC
• Programing skills in C++ or Python for automation of reload engineering tasks, and familiarity with Linux based operating systems
• Experience with metallic fuels
• Prior work experience under 10 CFR Part 50, Appendix B quality requirements
• Experience in maintaining engineering computer programs in compliance with ASME NQA-1 standards for software quality

Perks & Benefits

• Competitive salary and performance bonuses including cash and equity awards
• Remote work culture with potential travel
• 100% company-paid health, dental, and vision coverage
• 401(k) with 100% company match
• Generous Time Off and Family Care
• Up to 32 hours per years of professional development course fees covered

Ready to help license the next generation of nuclear fuel? Join Lightbridge and be part of something extraordinary.

Please submit your resume and cover letter outlining your qualifications, experience, and salary expectations 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.

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’re inspired to apply your engineering expertise to make real-world impact, this is your opportunity to help shape the future of clean energy.

About the Role: Safety Analysis Engineer

As a Safety Analysis Engineer, you will lead safety simulations of design-basis events across a range of water-cooled reactor types. Your work will directly support the commercialization and licensing of Lightbridge Fuel, while contributing to the development of reactor design and safety application methodologies.

What You’ll Be Doing

• Develop a safety analysis plan.
• Perform independent engineering design studies and verifications and lead design reviews in areas of expertise.
• Interface with engineering services suppliers to achieve project outcomes and address complex technical issues.
• Participate in the development of reload licensing methodologies and assist in the regulatory review and approval process.
• Interface with customers to incorporate plant-specific and cycle-specific design input into reload engineering and transient analyses.
• Develop design procedures and implement processes to support reload licensing activities.
• Provide technical and project leadership in areas of expertise, and support other functions as needed within the organization.

Who You Are

• Principle Engineer: BS in Nuclear Engineering + 14 years of relevant experience, or MS + 12 years, or PhD + 10 years of relevant experience
• Senior Engineer: BS in Nuclear Engineering + 5 years of relevant experience, or MS + 4 years, or PhD + 3 years of relevant experience
• Expertise in accident analysis of commercial LWRs, with a strong knowledge of two-phase flow and boiling heat transfer fundamentals
• Significant experience in fuel vendor or utility engineering, with a focus on reload safety analysis and plant licensing basis
• Substantial experience with LWR transient and loss-of-coolant accident analysis mythologies, including the treatment of uncertainties for best-estimate approaches
• Expertise with reactor safety codes such as RETRAN, RELAP5 and TRAC
• Programming skills in C++ or Python for automating reload engineering tasks; familiarity with Linux environments
• Experience working under 10 CFR Part 50, Appendix B quality requirements
• Experience in maintaining engineering computer programs in compliance with ASME NQA-1 standards for software quality.

Perks & Benefits

• Competitive salary and performance bonuses including cash and equity awards
• Remote work culture with potential travel
• 100% company-paid health, dental, and vision coverage
• 401(k) with 100% company match
• Generous Time Off and Family Care
• Up to 32 hours per year of professional development course fees covered

Ready to help license the next generation of nuclear fuel? Join Lightbridge and be part of something extraordinary.

Please submit your resume and cover letter outlining your qualifications, experience, and salary expectations 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.

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 – Contract Position

Lightbridge is looking for an HPC Cluster Administrator. This position is a contract position where you will manage and optimize our high-performance computing environment to support advanced nuclear simulations and engineering workflows. You’ll work closely with internal teams and external partners to ensure secure, efficient, and compliant operations.

What You’ll Be Doing

• Manage HPC internal user accounts, user accounts data flow, storage allocations, folder access control and code access for Export control and ITAR.
• Deploy Slurm and setup queue management. 
• Create and develop a data control plan in compliance with ITAR and export control.
• Install, upgrade, and maintain scientific software, applications, and hardware. 
• Maintain software verifications and version control for nuclear software quality assurance.
• Assist engineers with scripting for job submittals using shell files, as specific settings will need to be known for the HPC system and how they will apply to the coding.
• Maintain and manage personnel access control to the HPC (virtually).
• Work with Physical Colocation partner over planned outages and external factors. 
• Work with code vendors to maintain compliance with software being available on a shared computing cluster (BISON, MCNP, SCALE, and other controlled codes on the user level). 
• Implement HPC OnDemand software for GUI implementation for less experienced Linux Users.
• Create and maintain technical documentation, user guides, and deliver training sessions on HPC usage.
• Work with Quality Assurance Manager to develop software quality assurance plan (SQA)

Who You Are

• BS in Computer Science, Computer Engineering or related field + 5 years of relevant experience, or MS + 4 years of relevant, or PhD + 3 years of relevant experience
• In-depth knowledge of Linux operating systems (RedHat), including RHEL, CentOS, or SLES, and system administration in a cluster environment. 
• Proficiency in one or more scripting languages such as Perl, Shell, Python, or Bash for task automation and system management. 
• Experience with high-speed networking technologies, including InfiniBand and Ethernet. 
• Expertise with high-speed storage and parallel file systems, such as Lustre, OSNexus, or GPFS. 
• Experience with HPC job schedulers like Slurm or LSF.
• Experience with server installation, configuration, maintenance, and upgrades of hardware and scientific software.

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.