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Realta Fusion Inc. Logo Realta Fusion Inc. · Energy

Nuclear Engineer

United States, Madison Employment contract · Job Posted April 23, 2026
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Job Description

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.

Job Responsibility

  • 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 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 specification of Anvil diagnostics
  • 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

Requirements

  • BS + 3 year's experience in Nuclear Engineering or a related field
  • 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

Nice to have

  • Advanced degree a plus
  • Familiarity with MCNP, OpenMC, DAGMC, MCBEND or similar
  • Experience with fusion modeling preferred

What we offer

  • 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
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