About the role#
Thea Energy is hiring a Physics Intern for the Fall 2026 term. This role focuses on research projects related to stellarator optimization, plasma confinement, and fusion neutronics. You will work alongside our physics team to advance our approach to commercial fusion energy.
What you'll do#
- Lead a dedicated research project within a core physics area.
- Perform literature reviews to help set project specifications.
- Run simulations or analyze data to inform our stellarator design.
- Work with mechanical and electrical engineering teams to translate modeling results into design specifications.
- Present your findings and project outcomes to the technical team at the end of your internship.
What you'll need#
- Current enrollment in an undergraduate, masters, or PhD program in Physics, Computer Science, Computer Engineering, Electrical Engineering, or Mechanical Engineering.
- Experience in areas such as plasma modeling, stellarator optimization, or plasma diagnostics.
- Ability to work in a facility that contains industrial hazards like high voltage, strong magnets, and cryogenics.
- Ability to occasionally lift up to 50 lbs.
Location & details#
- This is a full-time, paid, on-site internship based in Kearny, New Jersey.
- Compensation is $18-25/hr for undergraduate students and $26-30/hr for post-graduate students.
- We do not provide visa sponsorship for this role.
About Thea Energy
Thea Energy develops fusion energy systems using arrays of magnets and software controls. The company focuses on commercial fusion as a source of zero-emission power. It was founded in 2022 as a spin-out from the Princeton Plasma Physics Laboratory and Princeton University. The team is currently designing Eos, an integrated fusion system based on a planar coil stellarator architecture. The company is based in Kearny, New Jersey, and employs between 51 and 200 people.
How to get in at Thea Energy
Securing an internship at Thea Energy requires staying ahead of the crowd because roles in fusion technology attract significant interest. Intern Insider sends an instant alert the moment a role is published, which helps you apply among the first. Getting your application in early ensures your materials are reviewed before the pile grows too large for recruiters to manage. You can also use Intern Insider to surface the specific recruiters behind these roles. Reaching out directly to ask about the team or a potential referral often improves your response rates compared to waiting for a system update. It is a practical way to show genuine interest in their stellarator research while the hiring process is still active.
