Senior Nuclear Engineer

Job Description

We are building a next-generation nuclear energy company focused on a single, standardized microreactor core deployed in two variants: terrestrial power and lunar/space power. Our mission is to deliver portable, long-life, factory-fabricated nuclear systems that are safe, licensable, and scalable. We are seeking a Senior Nuclear Engineer to take technical ownership of reactor physics, neutronics, and core safety analysis for our unified reactor platform. This role is central to the credibility, licensability, and long-term success of the company. You will work closely with systems, thermal, mechanical, and licensing teams to mature a reactor design intended for real deployment—not paper studies. Tasks Own reactor physics and neutronics analysis for the core across terrestrial and space variants Perform steady-state and transient analyses, including reactivity coefficients, kinetics parameters, shutdown margins, and power distributions Develop, validate, and document modeling methods using Monte Carlo and deterministic tools Support safety analysis, fault response modeling, and design basis events Assess conservatism, uncertainties, and assumptions in nuclear calculations Interface with systems, thermal-hydraulics, materials, and mechanical engineering teams Contribute to licensing strategy, regulatory documentation, and external technical reviews Mentor junior engineers as the team grows Requirements Degree in Nuclear Engineering or closely related field (MS or PhD preferred) 6+ years of experience in nuclear reactor analysis, design, or safety Strong experience with neutronics tools such as MCNP, Serpent, OpenMC, SCALE , or equivalent Experience documenting analysis methods for internal, regulatory, or external stakeholders Ability to work across disciplines in a fast-moving technical environment Benefits Meaningful equity participation in a foundational nu