Principal Nuclear Piping Engineer; PE - Advanced Reactor NSSS

Position Summary

Johnson Service Group (JSG) is a nationally recognized professional staffing firm, and we are recruiting for a Principal Nuclear Piping Engineer to serve as a certifying authority within the Nuclear Steam Supply System (NSSS) design organization. This may be your opportunity to join one of the industry leaders in the development and deployment of next‑generation Advanced Light Water Reactors (ALWR) as they advance from design into plant implementation.

Annual Salary: $180,000 - $190,000 + full benefits package

Citizen Status: U.S. Citizenship is required

Certifications: Active PE Required. PMI / PMP preferred

Eligibility: Eligible to work under Department of Energy 10 CFR Part 810

Travel: 10-25%

As a direct-hire, remote role, this position will be responsible for complex design and analysis of Nuclear Steam Supply System piping in accordance with ASME BPVC Section III and applicable NRC regulatory requirements.

This position serves as a responsible engineer with PE stamping authority
, certifying design specifications, and leading evaluation of piping system solutions including reroutes and support reconfigurations. The engineer will generate technical requirements, review Siemens NX CAD models, mentor early‑career engineers, and ensure all work complies with ASME NQA‑1 and 10 CFR 50 Appendix B quality standards.

• Performs complex piping design and stress analysis of ASME BPVC Section III Class 1, 2, and 3 piping systems using the Bentley Auto Pipe computer program in accordance with the requirements of NB, NC, ND-3600, respectively.
• Performs piping design and stress analysis of ASME BPVC Section III Class 1, 2, and 3 piping components using the ANSYS computer program in accordance with the requirements of NB-3200.
• Performs pipe support design and stress analysis of ASME BPVC Section III NF supports using hand calculations or ANSYS computer program.
• Performs static and dynamic analysis including response spectrum and time history analysis to calculate stresses due to dead weight, thermal expansion, thermal gradients, seismic events, and fluid transients.
• Certifies design specification for ASME BPVC Section III Piping and/or Piping Supports
• Prepare and review engineering specifications, drawings, CAD models, and other documentation that communicate the design and technical aspects of piping components associated with NSSS systems.
• Collaboration with drafters and requires the engineer to reviews models that have been developed in Siemens NX.
• Leads the evaluation of design solutions (piping re‑route, reconfigurations of supports, etc.) which satisfy piping stress criteria.
• Provides oversight and mentoring to early career engineers in piping stress analysis and/or pipe support analysis.

• Bachelor’s degree in mechanical or nuclear engineering is required (advanced degree is preferred).
• PE License in Mechanical or Nuclear Engineering is required
  .
• Certifying Engineer experience to ASME BPVC Section III is required
  .
• 15+ years of highly relevant, full‑time engineering experience is required.
• Experience with the qualification of piping systems including ball joints is desirable.
• Subject Matter Expertise in one or more of the following areas:
  • Engineering design and piping stress engineering analysis in the nuclear industry.
  • Bentley Auto Pipe, ANSYS, or other comparable pipe analysis code.
  • ASME Section III Class 1, 2, and 3 piping systems (NB/NC/ND-3600) and/or piping supports (NF).

Johnson Service Group (JSG) is an Equal Opportunity Employer. JSG provides equal employment opportunities to all applicants and employees without regard to race, color, religion, sex, age, sexual orientation, gender identity, national origin, disability, marital status, protected veteran status, or any other characteristic protected by law.