Health Physics Summer Intern (m/w/d)

We are a fusion power company based in Everett, WA, with the mission to build the world's first fusion power plant, enabling a future with unlimited clean electricity. Our vision is a world with clean, reliable, and affordable energy for everyone.

Since Helion's founding in 2013, we have raised over $1 billion from long-time investors such as Sam Altman, Mithril, and Capricorn Investment Group as well as new investors SoftBank and Lightspeed to propel us forward. Our last prototype, Trenta, completed 10,000 high-power pulses and reached plasma temperatures of 100 million degrees Celsius (9 keV). We are now operating Polaris, our next prototype on the path to the world's first fusion power plant.

This is a pivotal time to join Helion. You will tackle real-world challenges with a team that prizes urgency, rigor, ownership, and a commitment to delivering hard truths - values essential to achieving what no one has before. Together, we will change the future of energy, because the world can't wait.

What You Will Be Doing

At Helion, our Radiation Safety and Nuclear Sciences (RaSNS) team plays a pivotal role in ensuring the safe development of fusion technology. As an intern and part of the Radiation Safety Program (RaSP), you'll be hands-on in supporting critical projects and day-to-day tasks aimed at enhancing safety practices. Working alongside our health physicists, you'll help monitor and control radiation sources, ensuring a safe workplace through advanced dosimetry, bioassay, and materials analysis. You'll also collaborate on the development of procedures that drive forward key projects that require the use or production of radioactive materials. If you're eager to make a real impact in fusion energy and work in a fast-paced industrial and lab setting, join a team that thrives on challenges and innovation! This is a 12-week onsite internship at our Everett, WA office.

You Will

• Support radioactive material work for multiple partner teams
• Perform periodic contamination and dose surveys for radiation areas
• Assist in radioactive material shipping and receiving
• Monitor personnel dosimetry
• Assist in neutron monitoring and calculations
• Apply health physics principles in an environment involving tritium

Required Skills

• Ability to work full time, onsite in Everett, WA for a minimum of 12 consecutive weeks during summer 2026
• Currently enrolled in a Bachelor's or Graduate (Master's or PhD) degree in Radiation Health Physics, Physics, Nuclear Engineering, or related field
• GPA of 3.0 or above
• Basic understanding of radiation/health physics
• Ability to work comfortably around radioactive materials
• Ability to complete basic radiation calculations, such as activity decay assessment or dose calculation
• Experience creating a viable SOP and performing surveys

Base Pay

• Bachelors/Master's: $29 / hour
• PhD: $31 / hour

Compensation and Benefits

At Helion, we are committed to fostering an equitable environment in every aspect of our operations, including compensation. For our internships, compensation is paid at an hourly base rate and is competitively benchmarked. All interns will also receive a one-time stipend at the start of their internship. Note that compensation for our internships is non-negotiable. Benefits will include paid holidays, sick time, wellness stipend, company and team events, and more to ensure a great experience for all of our interns!

• Interns receive a $5,000 stipend

Helion is an equal opportunity employer and value diversity at our company. We do not discriminate based on race, religion, color, national origin, gender, sexual orientation, age, marital status, veteran status, or disability status. If you need assistance or an accommodation during the interview process, please let us know.