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