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Nuclear Engineer

Realta Fusion
Madison, WI Full Time
POSTED ON 4/18/2026
AVAILABLE BEFORE 5/17/2026
This Nuclear Engineer will work with Realta’s engineering and scientific teams to provide critical engineering and design input on Realta’s technology development roadmap. The Nuclear Engineer will be a critical contributor to Anvil – Realta’s reactor scale simple magnetic mirror and primary technology development platform – and Realta’s first-of-a-kind fusion pilot plant, HAMMiR.

Realta Fusion is a rapidly growing start-up developing compact magnetic mirror fusion energy systems to address the biggest challenge of our time – tackling global climate change while ensuring a sufficient energy supply for at least ten billion people on (and off) earth. We are building a team with diverse talents dedicated to making fusion energy a real solution to humanity’s most pressing problem.

Responsibilities

  • Setup and perform radiation transport and activation simulations of fusion devices and facilities, including Anvil.
  • Interface with science and engineering teams to aid design, development, and deployment of fusion devices. Support analysis of fusion products detector data on operating fusion energy systems. Support specification of Anvil diagnostics.
  • Support technical risk assessment activities, feasibility studies, and technology roadmap development.
  • Develop specifications for sub-systems and interact with external contractors in design and supply of components.
  • Support analysis of fusion products detector data on operating fusion energy systems.
  • Synthesize and present technical work internally and externally, communicate daily with project teams and leadership to support programmatic needs.
  • Contribute to the establishment of company safety standards. Support radiation licensing and regulatory applications.
  • Foster a positive and inclusive work environment that aligns with the company's mission, values, and sustainability goals, promoting innovation, collaboration, and employee engagement.

Qualifications

  • Education: BS 3 year's experience in Nuclear Engineering or a related field. Advanced degree a plus.
  • Experience: Radiation transport modeling experience preferred. Familiarity with MCNP, OpenMC, DAGMC, MCBEND or similar. Experience with fusion modeling preferred.
  • Ability to work in a fast-paced, multidisciplinary, and results-driven start-up environment.
  • Strong interpersonal and communication skills (written, verbal, public presentation) to collaborate effectively with colleagues, external partners, and stakeholders.

Applicants who do not meet the entire job specification are encouraged to apply.

Compensation & Benefits

What we are working on is hard… and hugely important. Realta Fusion is assembling a talented team bound together by a passion to solve humanity’s biggest challenge with first-of-a-kind technology. Additionally, Realta offers:

  • Competitive compensation package, including equity stock options
  • Comprehensive benefits including health, dental, and vision insurance, plus a 401(k)
  • Flexible paid time off (PTO) to support work-life balance
  • Work and live in Madison, Wisconsin — one of America’s most livable and vibrant cities

We value diversity as a critical factor in innovation and believe a diverse team is necessary to solve the toughest problems. We aim to create an inclusive environment that unleashes the full creativity of our team members from a wide variety of backgrounds and experiences. We provide equal employment opportunities to all individuals based on merit and without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, veteran status, or any other protected status under applicable laws.

Salary.com Estimation for Nuclear Engineer in Madison, WI
$93,588 to $114,750
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