Senior Mechanical Design (Fuel Handling)

The nuclear energy renaissance is here – and the engineers building it are in high demand.
If you’ve spent your career mastering the craft of precision mechanical design and you’re ready to put that expertise to work on technology that could reshape the world’s energy future, this role was built for you.

What This Role Offers:
Location: Bellevue, WA
Full-Time | Hybrid | 12-Month Contract – High likelihood of extension based on performance and job needs
Schedule: M-F
Pay Rate: $69-$115/hr
Benefits: Healthcare – Medical, Dental, Vision | PTO | Some Paid Holidays | Unmatched 401k

What You’ll Be Doing:

• Produce robust 3D CAD models that support fast-paced design evolution using advanced SolidWorks modeling techniques and methodologies

• Develop, maintain, and review highly complex mechanical and structural designs for advanced Generation IV nuclear reactor systems

• Conduct trade studies to evaluate and down-select design solutions

• Create and review engineering drawings – layout, detail, interface control, and general arrangement – per ASME Y14.1 and Y14.5 standards

• Perform tolerance stack-up calculations

• Check and review drawings for accuracy and conformance to ASME and internal drafting standards via electronic redline process

• Use model configurations to support multi-discipline analysis needs including structural, neutronics, thermal-hydraulic, radiological, and safety

• Maintain configuration control of models and drawings through PDM/PLM software

• Document design progress, changes, and decisions using internal and external collaboration platforms

• Contribute to written guidance, drafting standards, and technical presentations and reports

• Provide oversight of supplier engineering and manufacturing vendors as needed

What You Bring:

• 15+ years of demonstrated experience in the design and drafting of complex mechanical systems

• Advanced proficiency in SolidWorks CAD

• Demonstrated expertise in Geometric Dimensioning and Tolerancing (GD&T)

• Proven experience creating and checking fabrication drawings

• Experience with tolerance stack-up calculations

• Hands-on experience with Design for Manufacturability (DFM) and Design for Assembly (DFA)

• Strong background in mechanical and machine design

• Experience using a Product Data Management (PDM) or Product Lifecycle Management (PLM) system

• Nuclear equipment design experience is a plus, but not required

• Experience with supplier engineering and manufacturing vendor oversight is a plus, but not required

• Strong analytical and problem-solving skills; ability to manage multiple concurrent tasks with minimal direction

• Organized and detail-oriented with excellent written and verbal communication skills

• B.S. in Mechanical Engineering, Drafting/Design Technology, or related discipline preferred

Thomas-Thor provides equal employment opportunities to all employees and applicants for employment and prohibits discrimination and harassment of any type without regard to race, color, religion, age, sex, national origin, disability status, genetics, protected veteran status, sexual orientation, gender identity or expression, or any other characteristic protected by federal, state, or local laws.