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: 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.

Role Overview

The Environmental Licensing Engineer supports Lightbridge’s mission to advance next‑generation nuclear fuel technologies by ensuring all environmental activities meet federal, state, and local regulatory requirements. This role leads environmental analysis, prepares licensing documentation, and partners with engineering, safety, and regulatory teams to maintain compliance throughout fuel cycle facility siting & development. The engineer plays a critical role in enabling Lightbridge to scale responsibly, operate transparently, and uphold the highest standards of environmental stewardship.

Key Responsibilities

• Conduct environmental studies and technical evaluations to support licensing, permitting, and regulatory submissions.
• Prepare, review, and maintain environmental reports and supporting technical documentation for permitting and licensing submittals.
• Develop and maintain environmental monitoring plans, baseline studies, and data analyses aligned with regulatory expectations.
• Evaluate project designs and operational plans for environmental risks, recommending mitigation strategies that align with Lightbridge’s safety and sustainability standards.
• Support the preparation of Nuclear Regulatory Commission (NRC) and other agency licensing packages, ensuring accuracy, completeness, and alignment with regulatory frameworks.
• Track and interpret evolving environmental regulations, guidance documents, and industry standards relevant to nuclear fuel development and demonstration projects.
• Coordinate with internal and external teams to ensure environmental requirements are integrated into engineering design, testing, and operational planning.
• Maintain compliance documentation and audit-ready records for internal and external reviews.
• Partner with engineering, safety, quality, and project management teams to embed environmental considerations into early-stage design and program planning.
• Evaluate engineering service providers and site environmental studies contracts.
• Engage with external stakeholders, including regulators, environmental consultants, and partner organizations to support licensing and permitting activities.
• Provide subject-matter expertise during site selection, design reviews, hazard analyses, and risk assessments.
• Contribute to the development of environmental management systems, processes, and tools that scale with Lightbridge’s growth.
• Identify opportunities to streamline environmental workflows, improve documentation quality, and enhance compliance readiness.
• Support internal training and awareness initiatives related to environmental compliance and licensing requirements.

Required

• Bachelor’s degree in Environmental Engineering, Environmental Science, Nuclear Engineering, or a related field.
• 5 years of experience conducting environmental impact assessments and preparing environmental reports for regulated industries.
• Familiarity with NRC, NEPA, EPA, and state environmental regulatory frameworks.
• Strong analytical, technical writing, and documentation skills.
• Ability to interpret complex regulations and translate them into actionable engineering or operational requirements.

Preferred

• Master’s degree in a related field.
• Experience in nuclear, advanced energy, or other highly regulated technical sectors.
• Prior involvement in licensing or permitting activities for federal agencies (e.g., NRC, DOE, EPA).

Knowledge of environmental modeling tools, GIS systems, or environmental monitoring technologies.

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.

Overview:

This is a full-time remote role for a Senior Licensing Engineer. The Senior Licensing Engineer will perform engineering regulatory analysis, conduct licensing engagements, and develop regulatory submittals for Lightbridge Fuel for various types of water-cooled reactors, in support of qualifying and commercializing Lightbridge Fuel.

Responsibilities

• Develop and lead topic-specific regulatory engagements and/or submittals.
• Develop regulatory analyses and manage regulatory requirements for specific topics.
• Review technical information provided in submittals to ensure alignment between Lightbridge’s regulatory requests and the supporting technical basis.
• Communicate licensing approach and regulatory requirements to technical and stakeholder organizations.
• Prepare technical and licensing teams for, and lead, topic-specific regulatory audits.
• Draft or support the drafting of, and coordinate, formal responses to regulatory requests for additional information.
• Manage schedules and resources for assigned scopes of work.
• Maintain an up-to-date understanding of regulatory frameworks and guidance.

Minimum Qualifications:

BS Degree in Nuclear Engineering or closely related field + 5 years relevant experience, or MS Degree in Nuclear Engineering or closely related field + 4 years relevant experience, or PhD in Nuclear Engineering or closely related field + 3 years relevant experience. For exceptional candidates, relevant work experience may substitute for years of experience.

Minimum Qualifications Continued:

• Experience interacting with at least one of the following governmental agencies in a licensing or regulatory affairs capacity: U.S. NRC, CNSC, ONR, ASNR, FANR, DOE, NNSA, NR, and state-level nuclear regulators. Experience working with two or more of these organizations is advantageous.
• Working experience at operating reactors and/or fuel production facilities.
• Working experience with nuclear fuel designs and associated regulatory submittals.
• General understanding of reactor physics, thermal hydraulics, safety analysis, special materials transportation licensing, fuel cycle facility licensing, or nuclear fuel design. Experience in metallic fuels, especially U-Zr, is advantageous.
• Familiarity with ASME Nuclear Quality Assurance (NQA-1) requirements.
• Experience working closely with industry, national laboratories, and nuclear regulators is advantageous.
• Demonstrated ability to work effectively in a team environment.
• Strong analytical and problem-solving skills.
• Excellent oral and written communication skills.
• Ability to access U.S. National Labs and other relevant facilities where Lightbridge projects are conducted.
• Ability to pass a background check and pre-employment drug screening.

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.

Position Summary

The Project & Financial Controls Analyst serves as a key liaison between the Project Management Office (PMO) and the Finance organization, supporting the integration of project performance data particularly Earned Value Management (EVM) with financial reporting. This role plays a critical part in ensuring accurate cost tracking, budget control, procurement financial oversight, and timely financial reporting across multiple projects. The analyst will support project, procurement, contracts, and finance teams by delivering reliable financial insights, dashboards, and analyses that enable informed decision-making.

Key Responsibilities

Project & Financial Controls

• Support project and financial control activities, including cost tracking, budget monitoring, and basic forecasting under the guidance of project management and finance leadership.
• Assist in integrating project performance metrics (including Earned Value data) with financial reporting to ensure consistency between project and financial systems.
• Perform variance analysis against budgets, forecasts, and baselines, and assist in identifying cost trends, risks, and opportunities.

Procurement & Contract Financial Support

• Support procurement finance processes by tracking purchase orders, commitments, and expenditures to ensure alignment with approved budgets.
• Assist with contract financial administration, including monitoring commitments, invoices, funding limits, and change orders within financial systems.
• Coordinate with procurement and contracts teams to resolve discrepancies and ensure timely and accurate cost recognition.

Financial Reporting & Close Activities

• Gather, validate, and prepare monthly and quarterly accruals in coordination with project management and finance teams.
• Support month-end close activities, including cost reconciliations, journal support, and variance explanations.
• Maintain accurate financial records and supporting documentation in accordance with internal controls and audit requirements.

Data Analysis & Reporting

• Support the development, maintenance, and ongoing analysis of Power BI dashboards, ensuring data accuracy, consistency, and usability.
• Perform financial and data analysis to support project performance reviews, management reporting, and ad hoc requests.
• Assist in improving reporting processes, data quality, and documentation standards.

Collaboration & Professional Development

• Collaborate with cross-functional stakeholders, including project managers, procurement, contracts, and finance teams, to ensure timely and accurate financial information.
• Develop foundational knowledge of project controls, financial systems, EVMS practices, and reporting tools through on-the-job training and mentorship.

Required Qualifications

• Bachelor’s degree in Finance, Accounting, Business Administration, Engineering, or a related field, and a minimum of 5 years of relevant experience in project controls, finance, or cost analysis.
• In lieu of a bachelor’s degree, 10 years of relevant experience in project controls, financial analysis, or related disciplines.
• Experience working in an Earned Value Management System (EVMS) environment.
• Strong understanding of cost control, budgeting, forecasting, and financial reporting fundamentals.

Preferred Qualifications

• Experience supporting procurement and contract financial management.
• Proficiency with Power BI, Excel (advanced formulas, pivot tables), and financial or project management systems (e.g., ERP systems).
• Experience working in a PMO or matrixed project environment.
• Familiarity with internal controls, audits, and compliance requirements.

Key Skills & Competencies

• Strong analytical and problem-solving skills with attention to detail.
• Ability to manage multiple priorities and meet deadlines in a fast-paced environment.
• Effective written and verbal communication skills, with the ability to explain financial information to non-financial stakeholders.
• Collaborative mindset with the ability to work across functional teams.