Senior Mechanical Engineer

Thomas Thor is a dynamic company shaping the future of advanced nuclear energy. They are seeking a Senior Mechanical Engineer to design and analyze Nuclear Steam Supply System piping for a next-generation modular advanced light water reactor, ensuring compliance with industry standards and providing technical oversight to early-career engineers.

Responsibilities:

• Perform complex piping and component stress analyses for ASME BPVC Section III Class 1–3 systems using AutoPIPE, ANSYS, and hand calculations, including NF pipe support evaluations
• Conduct static and dynamic analyses (response spectrum, time history, thermal loads, seismic events, and fluid transients) to ensure compliance with ASME design criteria
• Prepare and review engineering specifications, drawings, and CAD models (Siemens NX), collaborating closely with drafters to validate design accuracy
• Lead design solution assessments, such as piping reroutes and support reconfigurations, to resolve stress issues and optimize system performance
• Provide technical oversight and mentoring to early‑career engineers while managing diverse, complex tasks, interpreting project scope, and maintaining required qualifications

Requirements:

• Bachelor's Degree in Engineering, preferably Nuclear or Mechanical Engineering
• Minimum of 8 years engineering experience
• Experience with design and stress analysis of ASME BPVC Section III piping systems in accordance with the requirements of NB, NC, or ND-3600
• Eligible to work under Department of Energy 10 CFR Part 810
• Professional Engineer (P.E.) Certification