12mo ago

Senior Nuclear Engineer

United StatesUnited States·AustinFull-timesenior
OtherEngineer
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Quick Summary

Overview

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.

Technical Tools
technical-writing
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.
  • 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
  • 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

    • Location & Eligibility

    Where is the job
    Austin, United States
    On-site at the office
    Who can apply
    US
    Listed under
    United States

    About this job

    Who can apply
    United States
    Posted
    365 days ago
    Employer
    has 25 open jobs on Jobera in 2 countries.

    Listing Details

    Posted
    November 12, 2025
    First seen
    March 26, 2026
    Last seen
    November 12, 2026

    Posting Health

    Days active
    230
    Repost count
    0
    Trust Level
    21%
    Scored at
    November 12, 2026

    Signal breakdown

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    Senior Nuclear Engineer
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