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Senior Nuclear Engineer

Open 62d
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

What this application asks

lever

Resume/CV, Full name, Email, Phone, Current location, Current company, LinkedIn URL, Twitter URL, GitHub URL, Portfolio URL

  • Are you legally authorized to work in the United States? choose one
  • Will you now or in the future require sponsorship for employment visa status? choose one
  • This role is on-site 5 days per week. How do you feel about this schedule? choose one · optional

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