Senior Mechanical Engineer (Vessels)

Job Title: Senior Mechanical Engineer (Vessels)
Location: Bellevue, WA
Type: Contract
Compensation: $69.00 - $115.00
Contractor Work Model: Remote – offsite
Hours: 40.0

Overview

System One is seeking a Senior Mechanical Engineer to create design solutions for the design development of various reactor structures and components. Candidates must have extensive experience in structural equipment design. The Senior Engineer will report to the Reactor Enclosure System Component Manager. The Senior Engineer will work as part of a high functioning team of engineers and scientists focused on developing the design of next generation advanced nuclear reactors. The Senior Engineer we are seeking is a highly experienced engineer, preferably with a strong background in ASME Section III nuclear design. The successful candidate will be responsible for preparing and reviewing Design Specifications (DS) and Design Reports (DR) in accordance with ASME Section III requirements, as well as supporting licensing, compliance, and customer deliverables.

Responsibilities

• Create design solutions for the development of various reactor structures and components, with a focus on nuclear design and ASME Section III compliance.
• Perform detailed design, analysis, and documentation for ASME Section III Class NF structural supports, including frames, brackets, hangers, and other support elements used in nuclear facilities.
• Develop and maintain design specifications, calculations, load evaluations, and qualification reports in accordance with industry standards.
• Prepare engineering design packages, review design calculations for accuracy and code compliance.
• Collaborate with multidisciplinary teams to define requirements, resolve technical issues, and optimize component performance.
• Interface with internal quality teams, third-party reviewers, and regulatory bodies to support audits, design reviews, and certification processes.
• Support material selection, fabrication, inspection criteria, and acceptance standards for Class NF components.
• Participate in engineering change processes, nonconformance evaluations, and corrective actions.
• Maintain current knowledge of nuclear codes, standards, and industry best practices.

• BS in Mechanical Engineering or equivalent
• Minimum of 6 years of equipment/component design experience; relevant MS degree credited as 2 years, PhD as 4 years
• Experience in structural equipment design, seismic design, and finite element stress analysis, using tools like ANSYS
• Excellent writing and communication skills
• Strong analytical and problem-solving abilities, creative thinking
• Ability to work independently and on multiple tasks concurrently
• Familiarity with CAD, SolidWorks preferred
• Working knowledge of ASME Boiler and Pressure Vessel Code Section III preferred

System One, and its subsidiaries including Joulé 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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