System Design Engineer Jobs in Seattle, WA (NOW HIRING)

Job Title: RAC System Design Engineer (Mechanical) $54 - $90 an hour

Location: Remote 12 months with possible extension

Position Overview

System One is seeking a RAC System Design Engineer (Mechanical) to support the design and delivery of an advanced Reactor Air Cooling (RAC) System for a next-generation nuclear energy project. This role will support the ongoing development of a passive reactor cooling system designed to continuously remove heat through natural convection, providing safe and reliable cooling without reliance on pumps or operator actions.

The selected candidate will collaborate with project managers, design engineers, analysts, test engineers, and multidisciplinary engineering teams to support the successful design, integration, and deployment of this first-of-a-kind reactor technology.

Key Responsibilities

• Design nuclear and industrial mechanical systems including requirements development, engineering analyses, specifications, and system drawings. • Develop and maintain system architecture and design documentation, including Design Basis Documents, P&IDs, and Interface Control Documents. • Establish equipment design bases, including regulatory requirements, functional requirements, performance criteria, and failure mode evaluations. • Coordinate with multidisciplinary engineering teams including nuclear, thermal hydraulic, mechanical, I&C, and civil/structural engineering. • Evaluate equipment development requirements and support implementation of technology development strategies. • Develop engineering solutions that support operability, maintainability, and long-term reliability. • Manage technical interfaces with suppliers and review supplier engineering deliverables. • Provide technical oversight of supplier projects and coordinate technical reviews in partnership with supply chain teams. • Prepare engineering calculations, design reports, specifications, drawings, and engineering change packages. • Support licensing activities including safety analysis reports, technical specifications, topical reports, and other regulatory documentation. • Participate in design reviews and milestone assessments to verify design completeness and compliance. • Support continuous improvement initiatives and application of nuclear industry best practices.

Required Qualifications

• B.S. in Mechanical Engineering or related engineering discipline. • 6+ years of relevant mechanical engineering experience for Level 10. • 10+ years of relevant mechanical engineering experience for Level 11. • Advanced degree may be considered in lieu of a portion of required experience. • Experience designing complex mechanical systems, pressure vessels, or multidisciplinary engineered systems. • Strong understanding of configuration management principles and design control processes. • Experience supporting engineering activities under quality programs such as ASME NQA-1 or ISO 9001. • Excellent technical writing, communication, and presentation skills. • Strong problem-solving abilities and attention to detail. • Ability to work independently and effectively within multidisciplinary engineering teams. • Ability to manage competing technical priorities and multiple concurrent assignments.

Preferred Qualifications

• Experience with commercial nuclear reactor systems or advanced reactor technologies. • Experience with high-temperature pressure vessels or related mechanical systems. • Experience developing technical documentation supporting system architecture and design. • Professional Engineer (PE) license preferred but not required. • Familiarity with nuclear licensing processes and regulatory requirements. • Experience working with supplier oversight and technical integration activities.

The successful candidate will possess strong technical leadership skills, demonstrate a commitment to engineering excellence, and thrive in a collaborative, fast-paced engineering environment.

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.

#LI-TC1