Summer 2026 Internship - Experiments, X-Ray Diagnostics

About Pacific Fusion

Pacific Fusion was founded in 2023 with the mission to power the world with abundant, affordable, clean energy.

We are rapidly designing and building a pulsed magnetic fusion system to achieve net facility gain (more fusion energy output than stored energy input). In parallel, we are developing the key components required to build affordable fusion systems.

Our plans are ambitious. We have raised over $900M so far from incredible investors, resourcing us to deliver on these plans. We are bringing together the best scientists, engineers, and operators from the fusion community, hard tech industry, and other sectors. We are united by a shared sense of urgency to provide clean power for the world, particularly managing climate change while meeting growing global energy demand. You can read more about us in this letter from our founders.

Why This Role Matters

Pacific Fusion’s experimental group is developing the scientific diagnostics that will enable testing and improving our fusion targets on our Demonstration System in order to demonstrate facility gain for the first time. These diagnostics measure the nuclear, x-ray, and optical outputs of a fusion target. This role will work with our scientists in the Lab to develop novel x-ray diagnostics.

What You'll Do

• Write software to generate synthetic outputs from a fusion target simulation


• Develop novel analysis methods for different kinds of expected diagnostic data

What You Bring

• Programming experience


• Experience with interpreting data, e.g. from lab courses or previous research/internships

Additional Requirements:

• Able to work full time, onsite for a minimum of 10 consecutive weeks beginning in June 2026

Bonus Points For

• Experience programming in python


• Previous experience with Monte Carlo simulation tools


• 6+ months of a previous internship, co-op, or academic project experience outside of normal classes


• GPA of 3.5 or above 

What We Offer

• Real resume building scientific experience


• Mentorship from experienced professionals


• Exposure to the full product development lifecycle


• A collaborative and learning-focused work environment


• An unforgettable summer!

Benefits

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  Industry-competitive salary

  
  


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  Equity plan

  
  


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  6% employer 401k matching

  
  


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  Generous paid time off (including sick leave, vacation, paid family leave)

  
  


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  Medical, Dental, and Vision insurance

  
  

Actual base salary offered will be determined by: experience, skills, and work location. This range is for base salary, our total compensation includes equity and benefits. We welcome you to apply even if your expectations are outside our listed range.

Pacific Fusion is committed to creating a diverse environment and is proud to be an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, gender, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.

Pacific Fusion is committed to providing reasonable accommodations for qualified individuals with disabilities in our job application procedures and throughout employment. If you need assistance or any accommodation, please let us know.

Pacific Fusion does not accept unsolicited resumes from recruiters or employment agencies without a fully executed recruitment agreement in place. In the absence of such agreement, Pacific Fusion reserves the right to pursue and hire any candidates without an obligation to pay fees. Agencies are requested not to contact Pacific Fusion hiring managers or employees regarding recruiting services.