Senior Nuclear Engineer jobs in United States
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Last Energy · 1 month ago

Senior Nuclear Engineer

Last Energy is a fast-growing technology company redefining how nuclear power is designed, manufactured, and deployed. They are seeking a Senior Nuclear Engineer to join their core engineering team and drive the analytical rigor behind microreactor design, influencing design decisions that shape the future of energy.

Clean EnergyEnergyEnergy ManagementNuclearRenewable EnergySustainability

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

Qualification

Nuclear EngineeringNuclear systems analysisSafety analysisTRACEMELCORMCNPVERASCALESERPENTRegulatory experienceTechnical writingCommunication skillsMentoring

Required

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

Preferred

Department of Energy regulatory experience

Company

Last Energy

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Last Energy is a nuclear technology company that provides nuclear energy through its modular micro nuclear power plants.

Funding

Current Stage
Growth Stage
Total Funding
$164M
Key Investors
Astera InstituteGigafundFirst Round Capital
2025-12-16Series C· $100M
2024-08-29Series B· $40M
2021-02-16Series A· $20M

Leadership Team

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Bret Kugelmass
CEO, Founder
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Company data provided by crunchbase