Nuclear Engineer

Realta Fusion Inc; Madison (WI); On-site; USD 80,000 - 100,000; Full time

Benefits offered by this job

Equity stock options

Health, dental, and vision insurance

401(k)

Flexible paid time off (PTO)

Job summary

A fusion energy technology startup is seeking a Nuclear Engineer to work with engineering teams on simulation and design for nuclear fusion technology. Candidates should have a BS and at least 3 years of relevant experience, particularly in radiation transport modeling. Responsibilities include developing specifications and supporting analysis of fusion systems. Additional benefits include a competitive compensation package with stock options and comprehensive health insurance. The role is based in Madison, Wisconsin, known for its vibrant living environment.

Qualifications

• 3+ years of experience in Nuclear Engineering or related field required.
• Experience with fusion modeling preferred.
• Ability to work in a fast-paced, multidisciplinary environment.

Responsibilities

• Perform radiation transport and activation simulations of fusion devices.
• Support analysis of fusion products and facilitate design development.
• Contribute to safety standards and support radiation licensing.

Skills

Radiation transport modeling

MCNP

OpenMC

DAGMC

MCBEND

Communication skills

Education

BS in Nuclear Engineering or related field

Advanced degree (optional)

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.

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

1. Setup and perform radiation transport and activation simulations of fusion devices and facilities, including Anvil.
2. 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.
3. Support technical risk assessment activities, feasibility studies, and technology roadmap development.
4. Develop specifications for sub-systems and interact with external contractors in design and supply of components.
5. Support analysis of fusion products detector data on operating fusion energy systems.
6. Synthesize and present technical work internally and externally, communicate daily with project teams and leadership to support programmatic needs.
7. Contribute to the establishment of company safety standards. Support radiation licensing and regulatory applications.
8. 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

1. Education: BS + 3-year's experience in Nuclear Engineering or a related field. Advanced degree a plus.
2. Experience: Radiation transport modeling experience preferred. Familiarity with MCNP, OpenMC, DAGMC, MCBEND or similar. Experience with fusion modeling preferred.
3. Ability to work in a fast-paced, multidisciplinary, and results-driven start‑up environment.
4. 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

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.