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 & 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.
7+ 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
Numbers & Facts
Location
Austin, TX
Skills
Analysis Skillsunmatched
Communication Skillsunmatched
Continuous Improvementunmatched
Design Documentunmatched
Hydraulic Engineeringunmatched
Licensingunmatched
Mentoringunmatched
Nuclear Engineeringunmatched
Nuclear Powerunmatched
Physicsunmatched
Presentation/Verbal Skillsunmatched
Regulationsunmatched
Startupunmatched
Systems Analysisunmatched
Technical Analysisunmatched
Technical Leadershipunmatched
Technical Presentationunmatched
Technical Writingunmatched
VERAunmatched
Writing Skillsunmatched
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