{"id":922705,"url":"https://alion.io/job/terrapower-lead-engineer-system-design","title":"Senior Engineer, System Design","company":{"id":10977,"name":"TerraPower","domain":"terrapower.com","url":"https://alion.io/company/terrapower","size_band":"501-1000","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Greenhouse","truth_index":{"grade":"B","score":80,"open_postings":31,"ghost_share":0,"stale_share":0.774,"repost_share":0.032,"time_to_fill_p50_days":36,"computed_at":"2026-11-03T05:54:40Z"}},"role":"Industrial Engineering","role_family":"Industrial Engineering","seniority":"senior","employment_type":null,"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":131828,"max":171206,"currency":"USD","period":"year","gross":null,"usd_annual":171206},"salary_estimate":null,"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[{"name":"ASME NQA-1","optional":false},{"name":"Design Controls","optional":false}],"status":"live","first_seen_at":"2026-07-21T18:07:56Z","employer_posted_date":"2026-10-23","last_verified_at":"2026-11-03T19:18:58Z","board_verified":true,"closed_at":null,"days_open":105,"trust":{"level":"stale","repost_count":1,"flags":["stale"],"days_open":104},"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. \nSenior System Design Engineer \nTerraPower, LLC. is seeking a SeniorEngineer supporting the Natrium Demonstration Project. This role will support the ongoing design and delivery of the Natrium primary systems. The Natrium primary systems comprise those reactor systems responsible for heat transport, reactivity control, and containment of the reactor fuel and its coolant.You’ll collaborate with project managers, design engineers, analysts, test engineers, and other engineering specialties in a high-performing, multi-disciplinary environment to deliver the Natrium primary systems. \nJoin us in this high impact role to help advance a first-of-a-kind nuclear reactor towards commercial development. \nResponsibilities \nDrive alignment across multidisciplinary engineering teams (nuclear, thermal hydraulic, mechanical, instrumentation and controls, civil-structural) to define and refine system requirements\nDesign nuclear and industrial mechanical systems, including: requirements definition, analysis, specifications, and system drawings.\nDevelop and maintain system architecture and design documentation (e.g., Design Basis Documents, P&IDs, Interface Control Documents).\nEstablish equipment design bases, including: regulatory criteria, regulatory standards, functional criteria, performance criteria, and failure mode and effects.\nEvaluate technology development requirements and implement development programs for novel technologies or approaches.\nEnsure designs consider lifecycle factors including operability, maintainability, and reliability.\nManage technical interfaces with suppliers, including review and verification of deliverables.\nPrepare engineering change packages including calculations, design reports, design drawings, and design specifications\nPromote continuous learning and application of nuclear industry best practices\nInterface with and support licensing activities needed to obtain both the construction and operating licenses for the reactor systems\nParticipate in project design reviews at project milestones and periodic assessment points to verify compliance and completeness of design. \nKey Qualifications and Skills\nB.S. in Mechanical Engineering or related discipline from an accredited university\n10+ years of relevant experienceExperience Level may be partially substituted for advanced degree depending on position relevance\n\nDemonstrated experience in developing design of complex structures, multi-discipline integration, and mechanical pressure vessel equipment.\nStrong understanding of configuration management principles, as well as knowledge of design control tools application on nuclear or similar complex industrial applications.\nPrevious experience with nuclear reactors and systems, high temperature pressure vessels, or similar system design is highly desired. \nExperience working to quality standards on design activities, such as ASME NQA-1 or ISO 9001.\nGeneral or working knowledge of ASME BPVC Section III is highly desired.\nProfessional engineering licensure is desired but not required for this position.\nExperience in originating and developing technical documentation to support system architecture is preferred.\nExcellent technical writing, communication, and presentation skills.\nAttention to detail and aspiration for technical excellence.\nCandidate must be a self-starter and possess ability to coordinate and work within a design team with minimal direction.\nAbility to handle projects that include many competing objectives and design constraints, with ability to resolve conflicts between objectives.\nAbility to work on simultaneous tasks that require a multi-disciplinary approach. \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: $131,828 - $171,206\n\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.\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":8256,"description_truncated":false,"requirements":{"experience_years_min":10,"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":["Nuclear Energy","Nuclear Engineering"],"lifecycle":[{"event":"open","at":"2026-09-15T02:35:38Z"},{"event":"close","at":"2026-09-29T10:51:14Z"},{"event":"reopen","at":"2026-10-08T22:01:50Z"},{"event":"close","at":"2026-10-23T11:16:25Z"},{"event":"reopen","at":"2026-10-23T20:30:58Z"}],"visa":[],"liveness":{"score":13,"band":"cold","label":"Long shot","p_open":1,"p_active":0.45,"p_room":0.28,"age_days":104,"expected_fill_days":36,"reasons":["conf:0","stale_co","velocity","win:tail","crowd:"],"computed_at":"2026-11-03T05:54:40Z"},"pay":{"stated_usd_annual":171206,"is_top_pay":true},"html_url":"https://alion.io/job/terrapower-lead-engineer-system-design","json_url":"https://alion.io/job/terrapower-lead-engineer-system-design.json","meta":{"generated_at":"2026-11-04T00:22:51Z","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":482,"day_limit":null,"remaining_today":null,"minute_limit":300,"resets_at":"2026-11-05T00:00:00Z"}},"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":10977},"rest":"https://alion.io/mcp/rest/get_company?id=10977"},"human":"https://alion.io/catalog?offer=company.slices&for=job%2Fterrapower-lead-engineer-system-design"},{"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%2Fterrapower-lead-engineer-system-design"},{"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%2Fterrapower-lead-engineer-system-design"},{"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/terrapower-lead-engineer-system-design\", \"note\": \"what you need it for\"}"},"human":"https://alion.io/catalog?offer=company.verify&for=job%2Fterrapower-lead-engineer-system-design"}],"agent":{"mcp":"https://alion.io/mcp/jobs","mcp_open":"https://alion.io/mcp/open","next":[{"tool":"get_job","arguments":{"id":922705}},{"tool":"search_jobs","arguments":{"company":"terrapower.com","detail":"compact"}},{"tool":"match_people","arguments":{"job_id":922705},"note":"people open to offers who fit this vacancy"}],"note":"The same data through MCP tools: https://alion.io/mcp/open needs no sign-in (compact searches, postings, people); https://alion.io/mcp with an Alion account has everything. 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