{"id":1679686,"url":"https://alion.io/job/wsp-senior-mechanical-engineer-generation-nuclear","title":"Senior Mechanical Engineer (Generation) - Nuclear","company":{"id":1668012,"name":"WSP","domain":"wsp.com","url":"https://alion.io/company/wsp-ca","size_band":"5000+","is_staffing_agency":false,"employer_type":"direct","is_intermediary":false,"listed_via":null,"ats_vendor":"Oracle","truth_index":{"grade":"B","score":76,"open_postings":457,"ghost_share":0,"stale_share":0.939,"repost_share":0.002,"time_to_fill_p50_days":41,"computed_at":"2026-11-09T06:03:00Z"}},"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":["Houston, United States","Atlanta, United States","Boise, United States","Seattle, United States","Phoenix, United States","Overland Park, United States"],"countries":["US"],"hiring_countries":[],"hiring_countries_total":0,"salary":null,"salary_estimate":{"min_usd":89000,"max_usd":169000,"period":"year","method":"role_seniority_country_remote_cell","sample_n":6333},"experience_years_min":10,"visa_sponsorship":false,"relocation_package":false,"has_equity":false,"technologies":[],"status":"live","first_seen_at":"2026-09-24T20:04:24Z","employer_posted_date":"2026-09-24","last_verified_at":"2026-11-08T19:55:34Z","board_verified":true,"closed_at":null,"days_open":45,"trust":{"level":"ok","repost_count":null,"flags":[],"days_open":45},"description":"The Opportunity\nWSP is growing its nuclear engineering capability to support the next generation of nuclear projects across the United States. We are seeking a Senior Mechanical Engineer (Generation) - Nuclear who can bring proven engineering judgment and practical delivery experience to complex nuclear assignments, from operating-plant modifications and life-extension work to new nuclear and advanced reactor programs. This role is suited to an engineer who has developed meaningful depth in one or more mechanical disciplines and can apply that expertise across multidisciplinary projects, working directly with clients, technology providers, suppliers, and project teams to turn technical requirements into safe, constructible, and executable solutions. You will have the opportunity to take ownership of challenging engineering scopes, influence design decisions, and help strengthen WSP's growing nuclear engineering practice.\nYour Impact\nIndependently plan, execute, and deliver mechanical engineering assignments in accordance with applicable quality programs, codes, standards, regulatory requirements, budget, and schedule.\n\nPerform or lead mechanical engineering for operating nuclear facilities, plant upgrades and modifications, new nuclear projects, small modular reactors, and advanced-reactor assignments, based on the project requirements.\n\nDevelop and review design criteria, design bases, system descriptions, calculations, specifications, datasheets, equipment requisitions, technical evaluations, design change packages, drawings, and engineering reports.\n\nApply mechanical engineering principles to plant systems and equipment such as piping, pumps, valves, pressure vessels, heat exchangers, HVAC, fluid systems, material handling equipment, and reactor or balance-of-plant components.\n\nPerform engineering analyses appropriate to assigned work, which may include equipment sizing and selection, hydraulics, heat transfer, piping or pressure-boundary evaluations, operability reviews, condition assessments, and design-basis calculations.\n\nEvaluate design alternatives with consideration for safety, performance, constructability, reliability, maintainability, operability, life-cycle cost, and applicable nuclear quality and licensing requirements.\n\nSupport the equipment and supplier lifecycle, including technical requisitions, bid evaluations, vendor document reviews, resolution of design deviations and nonconformances, fabrication or test support, and verification that supplied equipment meets design requirements.\n\nSupport project execution from concept through detailed design, procurement, fabrication, construction, commissioning, plant modification, maintenance, or outage execution. Participate in site walkdowns, field verification, troubleshooting, and resolution of emergent technical issues when required.\n\nCoordinate requirements and interfaces across mechanical, process, civil/structural, electrical, instrumentation and controls, safety, construction, suppliers, reactor technology providers, and client teams. Support design reviews and resolution of technical interfaces.\n\nPrepare scope, schedule, level-of-effort estimates, assumptions, and technical inputs for project planning and proposals. Provide technical guidance and review to less-experienced engineers and designers, consistent with the candidate’s level of expertise.\n\nRequired Qualifications\nBachelor's degree in mechanical engineering or a closely related engineering discipline from an accredited institution.\n\nProfessional Engineer license in at least one U.S. jurisdiction.\n\nMinimum 10 years of relevant mechanical engineering experience, including minimum 7 years in nuclear power.\n\nDemonstrated experience in at least one nuclear mechanical area, such as plant systems, mechanical equipment, piping, reactor components, plant modifications, commissioning, equipment reliability, maintenance, outage support, or field engineering.\n\nExperience preparing, reviewing, or approving controlled engineering deliverables such as calculations, specifications, technical evaluations, drawings, reports, procurement documents, system requirements, or design change packages.\n\nWorking knowledge of engineering design control, configuration management, quality assurance, and the codes and standards applicable to the candidate’s area of mechanical engineering practice.\n\nAbility to evaluate technical problems, develop and compare practical design alternatives, document engineering decisions, and coordinate multidisciplinary interfaces.\n\nAbility to communicate technical issues and recommendations clearly with clients, project teams, suppliers, construction personnel, and other stakeholders.\n\nAbility to manage assigned scope, schedule, budget, technical interfaces, assumptions, and risks with appropriate oversight.\n\nAbility to travel to client offices, supplier facilities, laboratories, and nuclear sites when required.\n\nCodes and Standards\nThe successful candidate will have working knowledge of the requirements applicable to their area of practice. Relevant codes and standards may include:\nASME Boiler and Pressure Vessel Code, including Section III or Section XI, where applicable to the assigned scope.\n\nASME OM Code, ASME B31.1, and applicable Code Cases or mechanical equipment standards.\n\nASME NQA-1, 10 CFR Part 50 Appendix B, or comparable nuclear quality requirements for design control and engineering work.\n\nU.S. Nuclear Regulatory Commission requirements, regulatory guides, licensing-basis documents, and client procedures applicable to the assignment.\n\nOther relevant industry standards, which may include American Nuclear Society, Institute of Electrical and Electronics Engineers, National Fire Protection Association, and heating, ventilation, and air-conditioning standards.\n\nFor advanced-reactor assignments, ASME Section III Division 5 or other technology-specific codes and licensing approaches, where applicable.\n\nPreferred Qualifications\nMaster's degree in mechanical, nuclear, or a related engineering discipline.\n\nExperience supporting small modular reactors, advanced reactors, new nuclear development, first-of-a-kind projects, or other complex energy or industrial facilities.\n\nOperating-plant experience involving outages, maintenance, modifications, equipment reliability, troubleshooting, testing, plant walkdowns, or field engineering.\n\nDepth in one or more relevant codes, such as ASME Section III, Section XI, OM Code, B31.1, or NQA-1.\n\nExperience with requirements definition, system integration, technical trade studies, design verification, or configuration management for complex mechanical systems.\n\nExperience in an owner’s engineer, architect-engineer, utility, reactor vendor, engineer-procure-construct organization, or nuclear supplier environment.\n\nExperience with procurement engineering, supplier document review, fabrication, testing, construction, commissioning, nonconformance resolution, design verification, equipment qualification, requirements management, or configuration control.\n\nExperience leading design reviews, technical trade studies, interface resolution, mentoring engineers, supporting proposals, or interacting directly with nuclear clients.\n\nLeadership Attributes\nSafety-first judgment and the confidence to stop or challenge work when requirements are unclear.\n\nOwner mindset: connects design decisions to licensing, cost, schedule, constructability, operations, maintenance, and long-term asset performance.\n\nCommercial awareness: manages scope, assumptions, interfaces, risks, and change before they affect delivery.\n\nCollaborative leadership across disciplines, organizations, technologies, and geographies.\n\nPractical problem solving under time pressure without compromising technical quality or nuclear 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