Senior Engineer, System Design

TerraPower

Bellevue, WA

Full Time

Posted July 21, 2026

$132k - $171k

Nuclear Energy

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Listing evidence and provenance

Source: Greenhouse View original listing
Freshness: Open in the current public read path; this is not an employer guarantee.Last observed October 9, 2026
Classification: Modern power-system classification not yet published for this listing.Legacy source industry field: Nuclear Energy
Pay provenance: Employer-provided pay

Job Description

Join us in this high impact role to help advance a first-of-a-kind nuclear reactor towards commercial development.

Key Responsibilities

Drive alignment across multidisciplinary engineering teams (nuclear, thermal hydraulic, mechanical, instrumentation and controls, civil-structural) to define and refine system requirements
Design nuclear and industrial mechanical systems, including: requirements definition, analysis, specifications, and system drawings.
Develop and maintain system architecture and design documentation (e.g., Design Basis Documents, P&IDs, Interface Control Documents).
Establish equipment design bases, including: regulatory criteria, regulatory standards, functional criteria, performance criteria, and failure mode and effects.
Evaluate technology development requirements and implement development programs for novel technologies or approaches.
Ensure designs consider lifecycle factors including operability, maintainability, and reliability.
Manage technical interfaces with suppliers, including review and verification of deliverables.
Prepare engineering change packages including calculations, design reports, design drawings, and design specifications
Promote continuous learning and application of nuclear industry best practices
Interface with and support licensing activities needed to obtain both the construction and operating licenses for the reactor systems
Participate in project design reviews at project milestones and periodic assessment points to verify compliance and completeness of design.

Requirements

B.S. in Mechanical Engineering or related discipline from an accredited university
10+ years of relevant experience Experience Level may be partially substituted for advanced degree depending on position relevance
Demonstrated experience in developing design of complex structures, multi-discipline integration, and mechanical pressure vessel equipment.
Strong understanding of configuration management principles, as well as knowledge of design control tools application on nuclear or similar complex industrial applications.
Previous experience with nuclear reactors and systems, high temperature pressure vessels, or similar system design is highly desired.
Experience working to quality standards on design activities, such as ASME NQA-1 or ISO 9001.
General or working knowledge of ASME BPVC Section III is highly desired.
Professional engineering licensure is desired but not required for this position.
Experience in originating and developing technical documentation to support system architecture is preferred.
Excellent technical writing, communication, and presentation skills.
Attention to detail and aspiration for technical excellence.
Candidate must be a self-starter and possess ability to coordinate and work within a design team with minimal direction.
Ability to handle projects that include many competing objectives and design constraints, with ability to resolve conflicts between objectives.
Ability to work on simultaneous tasks that require a multi-disciplinary approach.
This 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.

Benefits & Perks

Competitive Compensation
Salary, eligible to participate in discretionary short-term incentive payments
Comprehensive Medical and Wellness Benefits Medical Vision Dental Life and Disability Gender Affirmation Benefits
Parental Leave
401k Plan
Generous Paid Time Off (PTO) 21 days of annually accrued PTO
Generous Holiday Schedule 10 paid holidays
Relocation Assistance
Professional and Educational Support Opportunities
TerraPower Career and Benefits information: https://www.terrapower.com/contact-us/careers/