RAC System Design Engineer (Mechanical)

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 involves collaborating with multidisciplinary engineering teams to design and implement innovative cooling solutions for nuclear reactors.

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

Requirements:

• 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
• 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