Senior Nuclear Engineer
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Before you apply
LocationAustin, TX
Work modeon-site
Typefull-time
SenioritySenior
Experience8+ yrs
DepartmentLast Energy, Engineering
Company size51–200 people
PostedNov 12, 2025 · 11mo ago
Verified live2d ago
May no longer be actively hiring
Posted by the company on Nov 12, 202588% of this company's open roles have been listed for 90+ days
At a glanceSummarised by Seekless from the posting.
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
Skills
TRACE
MELCOR
MCNP
VERA
SCALE
SERPENT
About the company
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.
About the role
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
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Lead and perform complex thermal-hydraulic and neutronics calculations
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Independently verify and approve engineering calculations and safety analyses prepared by peers and junior engineers
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Provide expert-level review of design basis documents, licensing submittals, and technical evaluations
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Mentor and guide junior engineers in analytical methods and modeling techniques
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Develop and maintain detailed models for reactor systems and accident scenarios
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Participate in peer reviews and regulatory interactions as a technical authority
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Contribute to continuous improvement initiatives by identifying gaps and proposing innovative solutions
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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