# Senior Nuclear Engineer at Last Energy

Senior Nuclear Engineer at Last Energy in Austin, TX. On-site, full-time. Posted November 12, 2025.

- Company: Last Energy
- Location: Austin, TX
- Workplace: On-site
- Job type: Full-time
- Experience: 8+ years
- Posted: 2025-11-12
- Apply: https://jobs.lever.co/last-energy/d8e0b8ed-acf7-4fa4-a2c0-2161ac79fb0f/apply
- Source: https://jobmagic.ai/jobs/senior-nuclear-engineer-last-energy-zt0qww

## Requirements

- 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

## Description

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