Senior Mechanical Design Engineer
Bellevue, Washington
Experience: 8
Category: Engineering
Contractor Work Model: Remote
Brand: System One
Compensation Range: 54.00 - 90.00 Per Hour
Job ID: 338044
Date Posted: 09/23/2025
Shortcut: http://jobs.systemone.com/KGhWcA
Job Title: Senior Mechanical Design Engineer
Type: Contract
Compensation: $54 - $90 hourly
Contractor Work Model: Remote
System One is actively seeking a Sr. Mechanical Design Engineer to support the development of advanced nuclear reactor technology. This role plays a pivotal part in designing key components of the Natrium Generation IV Reactor, including core components, reactor structures, and critical systems within the Nuclear Island. You’ll be part of a cutting-edge, high-performing team of engineers and scientists revolutionizing the future of clean energy.
Key Responsibilities:
Design equipment and reactor components based on input from engineering and project teams
Develop documentation for component testing and analysis
Conduct mechanical analyses using FEA tools like ANSYS
Lead design reviews and guide junior engineers and subcontractors
Apply Design for Manufacturability (DFM) and Design for Assembly (DFA) principles
Collaborate across disciplines to deliver innovative and compliant design solutions
Prepare and present technical data and deliverables for internal and external stakeholders
Qualifications:
B.S. in Mechanical Engineering or related field (advanced degrees a plus)
5+ years of mechanical equipment/component design experience
Experience with SolidWorks and 3D CAD design tools
Strong background in FEA, stress analysis, and mechanical calculations (preferably with ANSYS)
Familiarity with ASME BPVC Section III or VIII, and seismic analysis standards (ASCE 4/7/43) is highly desirable
Proven experience in writing test plans and technical specifications
Strong communication, leadership, and mentorship skills
Preferred Experience:
Design of core assemblies (fuel/control) in the nuclear industry
Familiarity with ASME BPVC Section III Division 5
Experience with Flow-Induced Vibration (FIV) or Comprehensive Vibration Assessment Programs (CVAP)
Background in experimental design and product testing in highly regulated environments
System One, and its subsidiaries including Joulé, ALTA IT Services, and Mountain Ltd., are leaders in delivering outsourced services and workforce solutions across North America. We help clients get work done more efficiently and economically, without compromising quality. System One not only serves as a valued partner for our clients, but we offer eligible employees health and welfare benefits coverage options including medical, dental, vision, spending accounts, life insurance, voluntary plans, as well as participation in a 401(k) plan.
System One is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex (including pregnancy, childbirth, or related medical conditions), sexual orientation, gender identity, age, national origin, disability, family care or medical leave status, genetic information, veteran status, marital status, or any other characteristic protected by applicable federal, state, or local law.
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