Lightbridge Corporation is pioneering advanced nuclear fuel technology aimed at enhancing reactor safety and efficiency. The Nuclear Design Engineer will support the design and analysis of Lightbridge Fuel for water-cooled reactors, contributing to fuel design, analysis, and commercialization through collaboration and technical documentation.
Perform neutronics and core design analyses in support of the licensing qualification and commercialization of Lightbridge Fuel for water‑cooled reactors
Develop, document, and maintain lattice physics and full‑core neutronics models using deterministic and Monte Carlo analysis tools
Integrate neutronics results with thermal‑hydraulics and fuel performance analyses
Develop and utilize software tools and workflows, including Python‑based scripting, to automate analyses, post‑process results, and improve efficiency
Explore or apply AI and data‑driven techniques (e.g., machine learning, surrogate models, automated optimization) to enhance fuel design, modeling efficiency, or decision‑making
Prepare technical calculations, reports, and licensing support documentation in compliance with quality and regulatory requirements
Collaborate with internal project teams, leadership, and stakeholders to meet technical, schedule, and quality objectives
Senior level: Lead complex analyses, resolve advanced technical challenges, review and approve technical work products, and interface with regulatory agencies, utilities, vendors, and partners
Senior level: Mentor and provide technical guidance to junior engineers and support engineering best practices
Qualification
Required
BS in Nuclear Engineering or a closely related field
2–3 years of relevant experience in reactor analysis, core design, neutronics, or nuclear engineering
Familiarity with neutronics concepts and lattice physics modeling through coursework or professional experience
Exposure to deterministic and/or Monte Carlo neutronics codes
Introductory experience with Python programming for analysis or data processing
Strong analytical skills and ability to work effectively in a team environment
Ability to access U.S. National Laboratories and pass required background checks and screenings
BS in Nuclear Engineering or a closely related field plus 5+ years of relevant experience, or MS + 4+ years, or PhD + 3+ years (equivalent experience considered)
Proven experience performing and leading neutronics and core design analyses
Proficiency with industry-standard deterministic and Monte Carlo neutronics codes
Working knowledge of neutronics, thermal-hydraulics, and fuel performance, with experience integrating results across disciplines
Experience developing and maintaining analysis methodologies and technical models
Strong technical judgment, problem-solving ability, and written and verbal communication skills
Ability to access U.S. National Laboratories and pass required background checks and screenings
Preferred
Experience with lattice physics and core design software, including: CASMO/SIMULATE, HELIOS/PRESTO, SCALE/PARCS
Experience with Monte Carlo neutronics codes such as: MCNP, KENO, SERPENT
Proficiency in Python for workflow automation, data analysis, or tool development
Experience or demonstrated interest in applying AI or machine learning methods to engineering analysis, optimization, or large-scale data interpretation
Experience developing scopes of work for neutronics analysis supporting fuel qualification, benchmarking, or core reloads
Experience with metallic nuclear fuels, particularly U-Zr
Familiarity with ASME Nuclear Quality Assurance (NQA-1) requirements
Experience collaborating with utilities, national laboratories, or nuclear regulators
Senior level: Prior experience mentoring or training junior engineers
Benefits
Performance bonuses, including cash and equity awards
Remote-first work culture with opportunities for travel
100% company-paid health, dental, and vision coverage
401(k) with 100% company match
Generous time off and family care benefits
Up to 32 hours per year of company-covered professional development course fees
Lightbridge is developing and commercializing next generation nuclear fuel technology that will significantly improve the economics and safety of existing and new reactors, with a meaningful impact on preventing climate change.
