{"id":3104682,"url":"https://alion.io/job/lightbridge-corporation-nuclear-fuel-performance-engineer","title":"Nuclear Fuel Performance Engineer","company":{"id":1812456,"name":"Lightbridge Corporation","domain":"ltbridge.com","url":"https://alion.io/company/ltbridge","size_band":"201-500","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"C","score":58,"open_postings":10,"ghost_share":0.7,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":null,"computed_at":"2026-10-28T05:59:10Z"}},"role":"Energy","role_family":"Energy","seniority":"middle","employment_type":"full_time","work_mode":"remote","remote_scope":"stated_countries","remote_scope_basis":"board_field","remote_working_hours":null,"hiring_geo_confidence":"structured","locations":[],"countries":[],"hiring_countries":["US"],"hiring_countries_total":1,"salary":null,"salary_estimate":{"min_usd":96000,"max_usd":173000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":17},"experience_years_min":4,"visa_sponsorship":false,"relocation_package":false,"has_equity":true,"technologies":[{"name":"Abaqus","optional":false},{"name":"ANSYS","optional":false},{"name":"SolidWorks","optional":false},{"name":"ASME NQA-1","optional":true}],"status":"live","first_seen_at":"2026-07-14T16:09:26Z","employer_posted_date":"2026-09-18","last_verified_at":"2026-10-28T05:43:07Z","board_verified":true,"closed_at":null,"days_open":105,"trust":{"level":"ghost","repost_count":0,"flags":["stale","company_stale"],"days_open":105},"description":"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.\nOverview:\nThis is a multilevel, full-time remote role for a Principal/Senior Nuclear Fuels Engineer. The Nuclear Engineer will perform fuel performance simulations related to rods and assembly level, assembly level conceptual design, extrusion simulations to model fabrication processes, and/or code development for fuel performance applications and Lightbridge Fuel. This work will be used in various types of water-cooled reactors, in support of qualifying and licensing Lightbridge Fuel.\nResponsibilities\nPerforming simulations & analyses to optimize the 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).\nDeveloping & implementing code, methods, and models of fuel performance codes and benchmarking these simulations.\nPerforming calculations and simulations to inform design, execution, and analysis of in-pile and out-of-pile experiments and other analyses performed by partner organizations.\nPerforming independent reviews of fuel performance and finite element method (FEM) simulations and analyses performed by other Lightbridge staff or partner organizations, as necessary.\nWorking collaboratively with other Lightbridge staff to determine engineering approach to simulations/analyses necessary to support development and licensing of Lightbridge Fuel.\nDocumenting simulations and analysis in engineering reports.\nReporting results of selected simulations/analyses in peer-reviewed or popular publications.\nContributing to reports to support regulatory submittals of Lightbridge Fuel.\nMentor junior staff.\nRequired Experience:\nPrincipal:BS Degree in Nuclear Engineering or closely related field + 14 years relevant experience, or MS Degree in Nuclear Engineering or closely related field + 12 years relevant experience, or PhD in Nuclear Engineering or closely related field + 10 years relevant experience. For exceptional candidates, fewer years of relevant work experience will be considered.\n\nSenior:BS and 5+ years, MS and 4+ years, or PhD Degree and 3+ years relevant work experience in the areas of nuclear or mechanical engineering. For exceptional candidates, fewer years of relevant work experience will be considered.\n\nAbility to be approved and acquire export control fuel performance codes.\nExtensive experience with modelling and simulation using at least one of the codes/frameworks: BISON/MOOSE, ABAQUS, ANSYS, DEFORM, SOLIDWORKS. Experience in both implicit and explicit FEM codes is preferred; multiple frameworks are excellent.\nWorking experience developing thermal-mechanical simulations to support fuel performance analysis and core reloads.\nWorking knowledge of neutronics/core design, fuel performance, and/or seismic analysis and from across these areas.\nDemonstrated ability to work in a team environment.\nStrong analytical and problem-solving skills.\nExcellent oral and written communication skills.\nAbility to pass background check and pre-employment drug screening.\nAbility to access US National Labs and other relevant facilities where Lightbridge projects are conducted.\nPreferred Qualifications:\nStrong knowledge of reactor physics, mechanical design, and nuclear fuel design.\nExperience in the area of metallic nuclear fuels, especially U-Zr and materials science, is advantageous.\nFamiliarity with ASME Nuclear Quality Assurance (NQA-1) requirements.\nExperience with fabrication processes is advantageous.\nDevelopment experience for subroutines and code objects to interact with FEM codes is excellent.\nExperience working closely with industry, national laboratories, and nuclear regulators is advantageous.\nExperience designing nuclear assemblies for PWRs/BWRs.\nLightbridge is committed to supporting the people who power our mission. We offer a comprehensive, competitive benefits program designed to promote well-being, flexibility, and long-term growth, including:\n Competitive salary and performance bonuses, including cash and equity awards\n Remote-first work culture with opportunities for travel\n 100% company-paid health, dental, and vision coverage\n 401(k) with 100% company match\n Generous time off and family care benefits\n Up to 32 hours per year of company-covered professional development course fees\nIf you’re excited about contributing to work that will help shape the future of clean energy, we encourage you to apply. We look forward to learning more about you and the impact you can make at Lightbridge.","description_format":"text","description_chars":4910,"description_truncated":false,"requirements":{"experience_years_min":4,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["Equity","Professional development"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":false,"industries":["Nuclear Energy","Nuclear Engineering"],"lifecycle":[{"event":"open","at":"2026-10-22T18:40:50Z"}],"visa":[],"liveness":{"score":8,"band":"cold","label":"Long shot","p_open":1,"p_active":0.285,"p_room":0.28,"age_days":105,"expected_fill_days":33,"reasons":["conf:0","stale_co","ghost","win:tail","crowd:"],"computed_at":"2026-10-28T05:59:10Z"},"pay":null,"html_url":"https://alion.io/job/lightbridge-corporation-nuclear-fuel-performance-engineer","json_url":"https://alion.io/job/lightbridge-corporation-nuclear-fuel-performance-engineer.json","meta":{"generated_at":"2026-10-28T06:22:07Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers","about":"Alion is a live layer of people, companies and AI agents: who they are, whether they are real and active right now, what they do and how to work with them, readable by people and by agents and paid per call.","catalog":"https://alion.io/catalog.json","usage":{"tier":"crawler_verified","counted_by":"address","units_charged":1,"used_today":8356,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-10-29T00:00:00Z"}},"offers":[{"id":"company.slices","title":"One company in depth, by slice","status":"live","price":{"credits":0.02,"usd":0.002,"plus_per_slice":{"credits":0.05,"usd":0.005}},"unit":"per company, plus each slice with data","note":"the employer in depth","call":{"mcp_tool":"get_company","arguments":{"id":1812456},"rest":"https://alion.io/mcp/rest/get_company?id=1812456"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Flightbridge-corporation-nuclear-fuel-performance-engineer"},{"id":"market.stats","title":"A market slice: pay, demand and time to fill","status":"live","price":{"credits":1,"usd":0.1},"unit":"per slice","note":"pay, demand and time to fill for this role and place","call":{"mcp_tool":"market_stats"},"human":"https://alion.io/catalog?offer=market.stats&for=job%2Flightbridge-corporation-nuclear-fuel-performance-engineer"},{"id":"job.search","title":"Open jobs by role, technology, place, pay and visa","status":"live","price":{"credits":0.02,"usd":0.002},"unit":"per posting in a list","note":"similar open postings","call":{"mcp_tool":"search_jobs"},"human":"https://alion.io/catalog?offer=job.search&for=job%2Flightbridge-corporation-nuclear-fuel-performance-engineer"},{"id":"company.verify","title":"Is this company real and active right now","status":"pilot","price":null,"unit":"per company","request":{"url":"https://alion.io/catalog/request","method":"POST","body":"{\"offer\": \"company.verify\", \"for\": \"job/lightbridge-corporation-nuclear-fuel-performance-engineer\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Flightbridge-corporation-nuclear-fuel-performance-engineer"}]}