Senior Nuclear Engineer

Last Energy is a fast-growing technology company redefining how nuclear power is designed, manufactured, and deployed. We are building a new generation of modular, distributed nuclear plants engineered for speed, scalability, and real-world impact. We are seeking a Senior Nuclear Engineer to join our core engineering team and drive the analytical rigor behind our microreactor design. This role will act as both a technical leader and independent thinker, directly influencing design decisions that shape the future of energy. Key Duties & Responsibilities - Lead and perform complex thermal-hydraulic and neutronics calculations - Independently verify and approve engineering calculations and safety analyses prepared by peers and junior engineers - Provide expert-level review of design basis documents, licensing submittals, and technical evaluations - Mentor and guide junior engineers in analytical methods and modeling techniques - Develop and maintain detailed models for reactor systems and accident scenarios - Participate in peer reviews and regulatory interactions as a technical authority - Contribute to continuous improvement initiatives by identifying gaps and proposing innovative solutions - Adapt quickly to evolving project needs, regulatory changes, and emergent technical challenges Qualifications - Bachelor’s or Master’s degree in Nuclear Engineering or a closely related discipline - 8+ years of experience in nuclear systems analysis, safety analysis, or reactor physics - Proficiency with at least two of the following codes: TRACE, MELCOR, MCNP, VERA, SCALE, SERPENT - Demonstrated experience performing and reviewing complex engineering calculations - Strong technical writing and communication skills, with the ability to present to both technical and non-technical audiences - Department of Energy regulatory experience is preferred