BaRupOn LLC, a vertically integrated American company operating across energy, healthcare, and infrastructure, is advancing the development of Small Modular Reactor (SMR) and Micro Modular Reactor (MMR) technologies for deployment across the United States. Headquartered in Irvine, California, the company is focused on delivering safe, reliable, and scalable clean energy solutions that support decarbonization and strengthen domestic energy security. BaRupOn
To support this initiative, BaRupOn is seeking Nuclear Engineers to join its growing reactor development team. These roles are central to the company’s nuclear program, spanning reactor design, safety analysis, regulatory support, and operational compliance.
Role Overview
This position is open to both mid-level and senior engineers. Candidates may bring foundational nuclear industry experience or advanced expertise in SMR/MMR systems, licensing, or safety analysis. All candidates should demonstrate strong technical capability, attention to detail, and a commitment to nuclear safety.
Engineers will work closely with senior leadership, including the Chief Technology Officer (CTO) and Chief Nuclear Officer (CNO), contributing across multiple technical workstreams as the program progresses from development to deployment.
Key Responsibilities
Engineers will support the design and optimization of SMR/MMR systems, including reactor physics, thermal hydraulics, and fuel cycle analysis. The role involves performing engineering calculations, simulations, and system-level analyses, as well as contributing to cross-disciplinary integration across nuclear, mechanical, electrical, and instrumentation and controls (I&C) systems.
The position also includes supporting NRC licensing activities through preparation and review of documentation such as Safety Analysis Reports (SAR/FSAR), Probabilistic Risk Assessments (PRA), Environmental Reports (ER), and responses to Requests for Additional Information (RAIs). All work must align with U.S. regulatory frameworks, including 10 CFR Parts 50 and 52, with familiarity in the emerging Part 53 framework.
Additional responsibilities include performing safety analyses, developing PRA models, supporting operational procedures, and ensuring compliance with quality assurance requirements under 10 CFR Part 50 Appendix B.
Qualifications
Candidates should hold a degree in Nuclear Engineering, Mechanical Engineering, Physics, or a related field. A minimum of three years of U.S. nuclear experience is required for mid-level roles, with eight or more years for senior candidates.
Applicants should have experience in at least one technical area such as reactor physics, thermal hydraulics, safety analysis, PRA modeling, or nuclear I&C systems, along with familiarity with tools such as RELAP, TRACE, MCNP, SCALE, or MELCOR.
Candidates must be authorized to work in the United States and eligible to obtain applicable security clearances.
Preferred Experience
Experience with SMR, advanced reactor, or Generation IV technologies is strongly preferred, along with prior involvement in NRC licensing activities. Additional advantages include PE licensure, ANS membership, and experience with DOE or national laboratory programs.
Opportunity
This role offers the opportunity to contribute directly to the design and development of next-generation nuclear systems within a program focused on execution and deployment. Travel requirements are approximately 10–20% annually for regulatory engagement, site visits, and industry collaboration.
BaRupOn’s nuclear program is structured to move from concept to operation, and Nuclear Engineers will play a critical role in delivering that capability.
For more details about the role, please access the full job description here: https://barupon-llc.breezy.hr/p/8e2bd5899297-nuclear-engineer-smr-mmr-reactor-design-licensing-safety-programs