Skip to main content

Last Energy

Senior Nuclear Engineer

Austin, Texas, United States

Location
Austin, Texas, United States
Work
On-site
Employment
Full-time
Level
Senior
Function
Engineering
Pay
Not stated
Posted
11 months ago

Pay and the market here

1,216 engineering jobs open in Austin: 7% remote, 268 posted in the last 30 days.

Wondering how well you fit this one? OptiTalent Career checks each requirement against your own record, privately. About OptiTalent Career →

About the role

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

Source

Posted by Last Energy on their own hiring page, jobs.lever.co. OptiTalent shows it as published, read 07 Nov 2026 11:25 UTC; the original is the reference.

View the original ad ↗

More at Last Energy

  • Last Energy · Austin, Texas, United States

    On-siteFull-timeSeniorEngineering

    Own the product vision and roadmap for a unified engineering tools platform spanning multiple tool and product lines; Lead UI/UX direction for the master interface, ensuring it is intuitive, consistent, and built around how hardware engineers actually work; Work across…

  • Last Energy · Bryan, Texas, United States

    On-siteFull-timeMid levelAdministration

    Track site requirements and recurring commitments, confirm completion on schedule, and follow up directly when items fall behind.; Keep QSHE (quality, safety, health, and environmental) training records, safety files, and compliance documentation complete, current, and…

  • Thermal Engineer

    5 weeks ago

    Last Energy · Austin, Texas, United States

    On-siteFull-timeSeniorEngineering

    Lead the conceptual design, analysis, and execution of critical thermal-mechanical components and systems for our advanced power plant; Drive mechanical design of components subject to thermal loading; Own the design of heat exchangers, piping networks, fluid storage tanks, and…

  • Last Energy · Austin, Texas, United States

    On-siteFull-timeSeniorEngineering

    Serve as the single technical owner of the PWR-5 facility configuration — maintaining an accurate, continuously updated record of all systems, structures, and components; Build, own, and maintain the Master Equipment List (MEL) for the PWR-5 facility, ensuring completeness,…