Plant Engineer

About the Role

You will play a critical role in developing Hadron’s next-generation micro modular reactor platform—translating conceptual designs into detailed engineering systems and ensuring seamless mechanical and thermal integration across all subsystems in a fast-paced, mission-driven environment. The Balance of Plant Engineer will lead the design, analysis, and integration of all systems external to Hadron’s microreactor core—including heat exchangers, power conversion systems, cooling loops, structural interfaces, and auxiliary systems. This individual will collaborate closely with reactor, thermal-hydraulic, electrical, and controls engineers to ensure the overall plant design meets performance, safety, and manufacturability requirements. • Collaborate with nuclear, mechanical, and structural engineers to ensure seamless integration between the reactor module and external systems • Conduct trade studies on system configurations, materials, and technologies to maximize efficiency, maintainability, and scalability • Contribute to system safety assessments and design reviews in accordance with NRC and ASME standards • Document system requirements, analyses, and results to support design certification and licensing submittals • Perform system-level modeling, thermal-hydraulic analyses, and flow simulations to optimize performance and safety margins • Lead the design and development of Balance of Plant systems, including primary and secondary heat transport, power conversion, and auxiliary systems • Collaborate with manufacturing and procurement teams to ensure BOP systems are compatible with modular, factory-built assembly • Support prototype development, testing, and commissioning activities as the design matures • Support component specification, material selection, and vendor coordination for critical BOP subsystems (heat exchangers, pumps, valves, condensers, piping, etc.) • Develop P&IDs, system flow diagrams, and interface control documents to define plant configuration and system boundaries

Key Responsibilities

• ▸system modeling
• ▸thermal‑hydraulic
• ▸bop design
• ▸trade studies
• ▸safety assessments
• ▸p&id development

What You Bring

This is a full-time on-site role for a Balance of Plant (BOP) Engineer, based in the San Francisco Bay Area. The position is ideal for candidates with strong mechanical or systems engineering experience who are passionate about designing and integrating the supporting systems that enable reliable and scalable nuclear power generation. • Familiarity with ASME Section III, ASME B31.1, or equivalent design codes • Bachelor’s or Master’s degree in Mechanical, Nuclear, or Systems Engineering (PhD preferred for senior roles) • Understanding of nuclear safety, containment, and regulatory frameworks is a plus • Strong proficiency with thermal-hydraulic modeling and simulation tools (e.g., RELAP5, MATLAB, Modelica, ANSYS Fluent, COMSOL) • Strong analytical, organizational, and communication skills • Ability to thrive in a collaborative, multidisciplinary startup environment • Experience with system integration, interface control, and mechanical design for power or process plants • 5+ years of experience in thermal-fluid systems, plant design, or power generation systems • Knowledge of heat exchangers, pumps, valves, piping design, and pressure boundary components

Requirements

• ▸asme codes
• ▸phd
• ▸nuclear safety
• ▸matlab
• ▸analytical
• ▸system integration

Work Environment

Onsite