Lead Nuclear Engineer - Reactor Design & Analysis

Energy Jobline ZR; Austin (TX); On-site; USD 180,000 - 260,000; Full time

Job summary

Last Energy in Austin is seeking a Senior Nuclear Engineer to lead thermal-hydraulic and neutronics calculations, independently verify engineering analyses, and influence design decisions for modular microreactor systems engineered for speed, safety, and scalability.

You will mentor junior engineers, review licensing submittals, engage in regulatory interactions, and drive continuous improvement by identifying gaps and proposing rigorous, practical solutions—adapting quickly to evolving project

Responsibilities

• Lead and perform complex thermal-hydraulic and neutronics calculations
• Independently verify and approve engineering calculations and safety analyses
• 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

Job description

Last Energy in Austin is seeking a Senior Nuclear Engineer to lead thermal-hydraulic and neutronics calculations, independently verify engineering analyses, and influence design decisions for modular microreactor systems engineered for speed, safety, and scalability.

You will mentor junior engineers, review licensing submittals, engage in regulatory interactions, and drive continuous improvement by identifying gaps and proposing rigorous, practical solutions—adapting quickly to evolving project