Senior Mechanical Engineer ASME Lead

System One is seeking a Senior Mechanical Engineer – ASME Lead to support the design and development of advanced nuclear reactor systems. This role will focus on the design, analysis, and certification of safety-related reactor components and pressure-retaining systems in accordance with ASME Section III requirements.

Responsibilities:

• Lead design and analysis of ASME Section III pressure boundary and internal reactor components
• Prepare, review, and certify Design Specifications (DS) and Design Reports (DR)
• Develop engineering calculations, load evaluations, qualification reports, and design documentation
• Ensure compliance with ASME Section III, NQA-1, and NRC requirements
• Support licensing activities, design reviews, audits, and code certification efforts
• Collaborate with multidisciplinary engineering teams, suppliers, and quality organizations
• Support material selection, fabrication requirements, inspections, and corrective actions
• Provide technical leadership and mentorship to engineering teams

Requirements:

• B.S. in Mechanical Engineering or related discipline
• Active Professional Engineer (PE) license required
• 10+ years of equipment or component design experience
• Extensive experience with ASME Boiler & Pressure Vessel Code Section III
• Demonstrated experience certifying Design Specifications and Design Reports for nuclear pressure-retaining components
• Strong knowledge of ASME Section III, NQA-1, and NRC regulations
• Experience with finite element analysis and ANSYS
• Excellent technical writing, communication, and problem-solving skills