Simulator Design Engineer

Holtec International and its subsidiary companies are developing the SMR-300, a small modular reactor designed to provide an unfailingly safe and secure source of clean energy through nuclear fission. This position is offered by SMR LLC, a member of the Holtec International family—a global turnkey supplier of equipment and systems serving the nuclear, solar, geothermal, and fossil power generation sectors.

Join a growing, multidisciplinary team of designers and engineers working on the next‑generation nuclear power plant.

As a Simulator Design Engineer I, you will apply industry best practices, regulatory guidance, codes and standards, and engineering expertise to support control strategy development and simulator‑assisted design activities. You will be part of a dynamic team executing a U.S. Government cost‑shared development program, requiring efficient completion of engineering assignments. Your role involves developing, maintaining, and enhancing nuclear power plant simulators, working with advanced simulation tools, integrating system models, and ensuring simulator fidelity for operator training and engineering applications.

• Simulator Development & Maintenance:
  • Design, develop, and maintain high‑fidelity nuclear plant simulators, ensuring compliance with industry standards.
  • Implement control logic, thermal‑hydraulic models, and system responses for real‑time simulation.
• System Modeling & Integration:
  • Develop and update thermo‑hydraulic, electrical, and mechanical system models to improve simulator accuracy.
  • Interface simulators with digital control platforms and plant control systems.
  • Support the integration of I/O systems for seamless data communication.
• Testing, Validation & Troubleshooting:
  • Conduct verification and validation (V&V) testing to ensure simulation accuracy and compliance.
  • Diagnose and resolve software, model, and control logic discrepancies.
• Collaboration & Technical Support:
  • Work with cross‑functional teams, including engineers and training personnel.
  • Support operator training programs by ensuring simulator responsiveness and reliability.

• Bachelor's degree in Mechanical, Electrical, or Nuclear Engineering, or a related field.
• Understanding of plant control logic, I&C systems, and mechanical systems.
• Eligible to work in accord with Department of Energy 10 CFR Part 810.

• Experience with nuclear power plant systems and process modeling.
• Experience in CFD modeling and multi‑physics simulation.
• Ability to analyze plant operation data and translate it into simulation models.
• Experience with simulator tools, such as 3
  
  Key Master, RELAP5, MELCOR, or equivalent.
• Knowledge of digital twin technology and real‑time data integration.
• Familiarity with NRC regulations and ANS‑3.5 standards for simulator certification.
• Strong problem‑solving, troubleshooting, and analytical skills.

Investing in people who power the future.

We believe great work deserves great rewards. Our benefits go beyond the basics, reflecting our commitment to supporting your whole self—your health, your future, and your career growth.

• Annual compensation based on skills and experience ranging from $ to $.
• Additional compensation earned through incentive structure.

• Medical, dental, and vision insurance
• 401(k) retirement plan with company match
• Paid time off and 11 paid holidays
• Company‑paid life and AD&D insurance
• Employee Assistance Program
• Wellness resources and voluntary benefits
• Training and educational assistance

If you’re driven to solve meaningful challenges and make a lasting impact, we invite you to build your career at Holtec—a generation ahead by design.