Principal Engineer, System Design (Nuclear)

Location: Bellevue, Washington, United States. The role is tied to Washington State and includes 0–10% travel. Relocation assistance is available.

Salary: $168,316–$252,475 per year, depending on qualifications and experience.

Company

hirify.global develops advanced nuclear energy technologies and medical isotope applications, including the Natrium Demonstration Project.

What you will do

• Drive alignment across nuclear, thermal-hydraulic, mechanical, instrumentation and controls, and civil-structural engineering teams.
• Design nuclear and industrial mechanical systems, including requirements, analyses, specifications, and system drawings.
• Develop system architecture and design-basis documentation, including P&IDs and interface control documents.
• Establish equipment design bases covering regulatory, functional, performance, and failure-mode criteria.
• Manage supplier interfaces, technical deliverables, engineering changes, and design reviews.
• Support technology development programs and licensing activities for reactor construction and operation.

Requirements

• Bachelor’s degree in Mechanical Engineering or a related discipline.
• 15+ years of relevant experience; an advanced degree may partially substitute for experience depending on relevance.
• Experience designing complex structures, integrating multiple disciplines, and working with mechanical pressure-vessel equipment.
• Experience with configuration management and design-control tools for nuclear or similarly complex industrial applications.
• Experience with nuclear reactors, high-temperature pressure vessels, or similar system design is highly desired.
• Experience with ASME NQA-1 or ISO 9001 quality standards; working knowledge of ASME BPVC Section III is highly desired.

Nice to have

• Professional engineering licensure.
• Experience developing technical documentation for system architecture.
• Nuclear industry experience applicable to ANSI/ANS 3.1 qualification requirements.

Culture & Benefits

• Multidisciplinary environment focused on advancing a first-of-a-kind nuclear reactor toward commercial development.
• Medical, vision, dental, life, disability, wellness, and gender affirmation benefits.
• 401(k) plan, parental leave, 21 accrued PTO days, and 10 paid holidays.
• Professional and educational support opportunities.
• Eligibility for discretionary short-term incentive payments.

Hiring process

• Employment verification includes review of education and experience against applicable nuclear industry qualification requirements.
• Applicants who are foreign nationals may undergo U.S. Government export-control review.