{"id":708583,"url":"https://alion.io/job/terrapower-fuel-fabrication-licensing-and-criticality-engineer","title":"Fuel Fabrication Licensing and Criticality Engineer","company":{"id":10977,"name":"TerraPower","domain":"terrapower.com","url":"https://alion.io/company/terrapower","size_band":"501-1000","is_staffing_agency":false,"is_intermediary":false,"ats_vendor":"Greenhouse","truth_index":{"grade":"A","score":95,"open_postings":20,"ghost_share":0,"stale_share":0,"repost_share":0,"time_to_fill_p50_days":105,"computed_at":"2026-09-24T05:45:00Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":"full_time","work_mode":"on_site","remote_scope":null,"remote_scope_basis":null,"remote_working_hours":null,"hiring_geo_confidence":"structured","locations":["Bellevue, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":{"min":140021,"max":181845,"currency":"USD","period":"year","gross":null,"usd_annual":181845},"salary_estimate":null,"experience_years_min":5,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-08-17T22:12:52Z","employer_posted_date":"2026-09-22","last_verified_at":"2026-09-24T13:21:16Z","board_verified":true,"closed_at":null,"days_open":37,"trust":{"level":"ok","repost_count":1,"flags":[],"days_open":37},"description":"TerraPower is a nuclear technology company based in Bellevue, Washington. At its core, the company is working to raise living standards globally through a more affordable, secure, and environmentally friendly form of nuclear energy along with innovations in medical isotopes to improve human health. In 2006, TerraPower originated with Bill Gates and a group of like-minded visionaries who evaluated the fundamental challenges to raising living standards around the world. They recognized energy access was crucial to the health and economic well-being of communities and decided that the private sector needed to take action and create energy sources that would advance global energy deployment. TerraPower’s mission is to be a world leader in new nuclear technologies, while developing innovators and future leaders in the nuclear field. As a result, the company’s activities in the fields of nuclear energy and related sciences are yielding significant innovations in the safety and economics of nuclear power, hybrid energy and medical applications - all for significant human health benefits.”\nTerraPower is seeking to hire highly motivated and forward-thinking professionals who are interested in focusing on advanced nuclear reactor research and development and influencing change within the nuclear power landscape and bringing forward the critical production of medical isotopes. TerraPower is an Equal Opportunity Employer. We do not discriminate in hiring on the basis of sex, gender identity, sexual orientation, race, color, religious creed, national origin, physical or mental disability, protected Veteran status, or any other characteristic protected by federal, state, or local law. \nFuel Fabrication Licensing and Criticality Engineer\nTerraPower is seeking a Fuel Fabrication Licensing and Criticality Engineer to join the Natrium Fuel Design and Supply team. The Fuel Fabrication Licensing and Criticality Engineer is responsible for developing, implementing, and maintaining nuclear criticality safety analyses and controls supporting the fabrication of Natrium fuel. The Fuel Fabrication Licensing and Criticality Engineer will integrate criticality safety into facility and process design and will be involved with process development, production readiness, technical documentation, and supplier coordination. This role requires quality-driven execution for safety critical components and fabrication processes.\nResponsibilities: \nDevelop nuclear criticality safety evaluations for fuel fabrication process steps, fresh fuel receipt, storage, handling, inspection, and transportation operations.\nPerform criticality safety calculations using industry-standard computational tools (i.e. SCALE/KENO, MCNP, etc) for Natrium fuel fabrication and related processes, including areas related to HALEU feedstock, fuel fabrication, and fresh fuel storage and transportation.\nEstablish engineered and administrative controls to ensure subcriticality under normal, abnormal, and credible accident conditions.\nDevelop and maintain Criticality Safety Evaluations, Criticality Safety Limits, and supporting technical documentation.\nSupport design reviews to ensure equipment, storage configurations, fuel fabrication processes, and facility layouts satisfy criticality safety requirements.\nEvaluate design changes through engineering change processes and assess impacts to nuclear criticality safety.\nSupport licensing activities by preparing technical reports, regulatory responses, and safety analyses for NRC review.\nInterface with fuel vendors and transportation organizations to support packaging, shipping, and receipt of fresh HALEU fuel.\nSupport development of operating procedures, training materials, and operational readiness reviews.\nParticipate in hazard analyses, design reviews, audits, and independent technical assessments.\nSupport development of criticality safety programs consistent with ANSI/ANS-8 standards and applicable NRC regulations.\nSupport continuous learning and application of nuclear industry best practices to maintain the highest quality of engineering design and proactively identify process change/enhancement opportunities.\n Key Qualifications and Skills \nEducation: Bachelor’s degree in Nuclear Engineering or closely related engineering discipline.\nMinimum 5 years of experience in nuclear criticality safety, reactor physics, fuel cycle engineering, or a related nuclear engineering field.\nExperience performing criticality safety analyses using Monte Carlo neutron transport methods.\nWorking knowledge of nuclear cross-section libraries and uncertainty methodologies.\nFamiliarity with NRC regulations applicable to criticality safety and fuel handling.\nExperience preparing technical reports and engineering calculations.\nStrong written and verbal communication skills with the ability to communicate technical information across multidisciplinary teams.\nAbility to work with minimum direction to solve challenging problems.\nAbility to work on multiple tasks concurrently during a given work week.\nExcellent attention to detail.\nThe successful candidate will possess a high degree of trust and integrity, communicate openly, and display respect and a desire to foster teamwork.\nThe Ideal Candidate:\nExperience supporting advanced reactors, sodium-cooled fast reactors, or fuel cycle facilities.\nExperience with HALEU fuel systems.\nExperience with fast-spectrum criticality methodology.\nProficiency with SCALE, MCNP, Serpent, or comparable neutron transport software.\nFamiliarity with ANSI/ANS-8 criticality safety standards.\nExperience with nuclear industry manufacturing and operation, DOE and NRC regulations\nExperience with NQA-1 / QL-1 standards or other highly controlled production standards\nStrong understanding of nuclear safety culture.\nThis position is subject to qualification requirements in accordance with ANSI/ANS 3.1. Candidates must meet the minimum education and experience criteria applicable to the role, including relevant nuclear industry experience where required. Verification of data will be part of the hiring process.\n\nJob Functions:\nJob Functions are physical actions and/or working conditions associated with the position. These functions may also constitute essential functions for the job which the employee must be able to fulfill, with or without accommodation. Information provided below is to help describe the job so that the applicant has a reasonable understanding of the job duties/expectations. An applicant's ability to perform and/or tolerate these actions and conditions will be discussed and workplace accommodations may be made on a case-by-case basis following an individualized assessment of the applicant and other considerations, including but not limited to any governing safety standards.\nMotor Abilities: Sitting for extended periods, bending/stooping, grasping/gripping, fine motor control (hands)\nPhysical exertion and/or requirements: Minimal, with ability to safely lift up to 25 pounds.\nRepetitive work: Prolonged\nSpecial Senses: Visual and audio focused work\nWork Conditions: Stairs, typing/keyboard, standard and/or sitting working environment of >8 hours/day\nTravel required 0-10%\nTerraPower’s technology is controlled for export by various agencies of the U.S. Government. TerraPower must evaluate applicants who are foreign nationals (other than asylees, refugees, or lawful permanent residents) in accordance with U.S. Government export control requirements. To facilitate TerraPower’s export control reviews, you will be asked as part of the application process to identify whether you are a U.S. Citizen or national, asylee, refugee, or lawful permanent resident of the United States. Government export authorization approval times vary. Based on the business needs for a particular position, TerraPower may not consider a foreign national from a country if it is impracticable to obtain timely Government export approval.\nJob details\nSalary Range: $140,021 - $181,845\nAny salary offered within the posted salary band is based on market data and commensurate with the selected candidate’s qualifications and experience. This range is specific to Washington State.\nJob Type: Full-time\nBenefits:\nCompetitive Compensation\nSalary, eligible to participate in discretionary short-term incentive payments\nComprehensive Medical and Wellness BenefitsMedical\nVision\nDental\nLife and Disability\nGender Affirmation Benefits\n\nParental Leave\n401k Plan\nGenerous Paid Time Off (PTO)21 days of annually accrued PTO\n\nGenerous Holiday Schedule10 paid holidays\n\nRelocation Assistance\nProfessional and Educational Support Opportunities\nTerraPower Career and Benefits information: https://www.terrapower.com/contact-us/careers/","description_format":"text","description_chars":8718,"description_truncated":false,"requirements":{"experience_years_min":5,"management_years_min":null,"team_size_min":null,"manages_managers":false,"education":{"level":"bachelor","optional":false},"security_clearance":false,"languages":[]},"benefits":["401k plan","Continuous learning","Parental leave","Relocation assistance"],"hiring_locations":[{"name":"United States","iso":"US","kind":"country"}],"hiring_excludes":[],"relocation_offered":true,"industries":["Energy & Utilities","Financial Services"],"lifecycle":[{"event":"open","at":"2026-09-11T04:11:33Z"},{"event":"close","at":"2026-09-16T07:16:02Z"},{"event":"reopen","at":"2026-09-23T00:45:12Z"}],"liveness":{"score":74,"band":"hot","label":"Hiring now","p_open":1,"p_active":0.817,"p_room":0.9,"age_days":37,"expected_fill_days":105,"reasons":["conf:2","velocity","win:mid"],"computed_at":"2026-09-24T05:45:00Z"},"pay":{"stated_usd_annual":181845,"is_top_pay":true},"html_url":"https://alion.io/job/terrapower-fuel-fabrication-licensing-and-criticality-engineer","json_url":"https://alion.io/job/terrapower-fuel-fabrication-licensing-and-criticality-engineer.json","meta":{"generated_at":"2026-09-24T14:07:19Z","cache_seconds":300,"methodology":"https://alion.io/methodology","terms":"https://alion.io/terms","contact":"https://alion.io/contact","api":"https://alion.io/developers"}}