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 sits at the intersection of innovation and execution , where complex modeling meets the fast-paced reality of startup deployment. This role will act as both a technical leader and independent thinker , directly influencing design decisions that shape the future of energy.Key Duties & ResponsibilitiesLead and perform complex thermal-hydraulic and neutronics calculationsIndependently verify and approve engineering calculations and safety analyses prepared by peers and junior engineersProvide expert-level review of design basis documents, licensing submittals, and technical evaluationsMentor and guide junior engineers in analytical methods and modeling techniquesDevelop and maintain detailed models for reactor systems and accident scenariosParticipate in peer reviews and regulatory interactions as a technical authorityContribute to continuous improvement initiatives by identifying gaps and proposing innovative solutionsAdapt quickly to evolving project needs, regulatory changes, and emergent technical challengesQualificationsBachelor's or Master's degree in Nuclear Engineering or a closely related discipline7+ years of experience in nuclear systems analysis, safety analysis, or reactor physicsProficiency with at least two of the following codes: TRACE, MELCOR, MCNP, VERA, SCALE, SERPENTDemonstrated experience performing and reviewing complex engineering calculationsStrong technical writing and communication skills, with the ability to present to both technical and non-technical audiencesDepartment of Energy regulatory experience is preferred#J-18808-Ljbffr