<div><b style="font-size:18px;">About Thea Energy: </b><span style="font-size:18px;"> </span></div><div><span style="font-size:12pt;">Thea Energy is leveraging recent breakthroughs in stellarator physics and engineering to create a faster and simpler approach to commercializing fusion energy. The company is reinventing the stellarator using computer-controlled arrays of planar coils thereby replacing the intricate, complex modular magnets required in all other stellarator architectures. Thea Energy is on a mission to create a limitless source of zero emission energy for a sustainable future.  </span></div><div><br></div><div><b style="font-size:18px;">Spring 2026 Intern Program:</b></div><div><span style="font-size:11pt;">We are looking for talented technical interns to join our team in the spring of 2026!</span></div><br><br><h3>Program Details:</h3><ul><li>For school year internships, expected time dedication is flexible with an hourly salary and tailored to your academic schedule.</li></ul><h3>Positions: </h3><ul><li><b>Mechanical Engineering Intern (onsite) </b></li><li>Mechanical Engineering Interns will develop and exercise their design, analysis, and hands-on skills to support prototyping and stellarator design activities. Activities may include CAD and/or FEA model development, and will culminate in the delivery of functional custom components, tooling, fluid systems, and test equipment.</li><div><br></div><li><b>Manufacturing Engineering Intern (onsite)</b></li><li>Manufacturing Engineering Interns will support process development, fabrication and assembly, equipment design, and testing for Thea Energy’s HTS magnet prototyping programs. Manufacturing Engineering interns will be exposed to the physical and strategic aspects of the manufacture of HTS magnets, and will get hands-on experience operating equipment.</li><div><br></div><li><b>Magnet Engineering Intern (onsite)</b></li><li>Magnet Engineering Interns will support the design, build, testing, and performance analysis of Thea Energy’s custom HTS magnets. Activities may include: design of magnet components and tooling, development of FEA simulations (electromagnetic, mechanical, or thermal), operation of cryogenic tests and test equipment, and development of custom analytical tools to assess magnet performance.</li><div><br></div><li><b>Test Engineering Intern (onsite)</b></li><li>Test Engineering Interns will support the development and execution of test equipment, facilities, and operations associated with Thea Energy's custom HTS magnets and magnet-related hardware. To enable test execution and analysis of performance data, this role may include aspects of mechanical, electrical, instrumentation, and software engineering.</li><div><br></div><li><b>Fusion Technology Intern</b></li><li>Fusion Technology interns will assist scientists and engineers in designing and developing various subsystems for Thea Energy’s stellarator fusion devices.</li><div><br></div><li><b>Plasma Physics Intern</b> </li><li>Plasma Physics interns will work with scientists to model magnetically confined high temperature fusion plasmas using sophisticated computational tools.</li><div><br></div><li><b>Stellarator Optimization Intern</b></li><li>Stellarator Optimization Interns will support computational physicists and plasma physicists in optimizing stellarator magnetic geometry for Thea Energy’s next-generation fusion devices.</li></ul><h3>Project assignments are based on existing team needs at the time and may include, but are not limited to:</h3><ul><li>High-temperature superconducting magnet engineering, manufacturing, and testing</li><li>Cryogenic and vacuum systems</li><li>Instrumentation and diagnostic systems</li><li>Electrical and control systems engineering</li><li>Mechanical engineering</li><li>Various modeling, simulation, and data analysis roles including but not limited to COMSOL, ANSYS, Python, C++, MATLAB, Simulink, Microsoft Visio, LabVIEW</li></ul><h3>The ideal candidate will have most, if not all, of these requirements:</h3><ul><li>Enrolled in a STEM undergraduate or graduate program (mechanical engineering, aerospace engineering, materials science, electrical engineering, etc.)</li><li>Interest in clean and sustainable energy to combat climate change</li><li>Hands-on or computational experience through academic research, club projects, hackathons, or industry internships</li><li>Highly self-motivated, independent, and driven to solve problems</li><li>Authorized to work in the US</li><li>Willingness to learn new things!</li><li>Compensation: $18-25/hr Undergraduate and $26-30/hr Post-grad</li></ul><br><div><span style="font-size:11pt;">It’s not necessary to meet all of the skillsets outlined above. Please feel free to send us a note and tell us why you would still be a great fit for this role or Thea Energy.  </span></div><div><span style="font-size:11pt;">  </span></div><div><b style="font-size:13.5pt;">Diversity and Inclusion: </b><span style="font-size:13.5pt;"> </span></div><div><span style="font-size:12pt;">Thea Energy is an equal opportunity employer committed to creating a company of diverse backgrounds. By creating a diverse environment, we will bring new ideas and approaches to solving some of the world’s hardest (and most important) problems. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, sexual orientation, gender identity or expression, national origin, family or marital status, age, disability, veteran’s status, or other characteristic protected by applicable laws and regulations.</span></div>

<p>Thea Energy (formerly Princeton Stellarators) was founded in 2022 with a focus on leveraging recent breakthroughs in stellarator physics and engineering to create a faster, simpler approach to commercializing fusion energy. Thea Energy is reinventing the stellarator using computer-controlled arrays of planar coils and replacing the intricate, complex modular magnets required in all other proposed stellarator architectures. Stellarators are inherently steady-state, stable magnetic configurations that eliminate potential disruptions, making it an optimal pilot plant architecture. Thea Energy is building off foundational research and technology development that it spun out of Princeton University and Princeton Plasma Physics Laboratory, where the stellarator was first imagined in 1951. Thea Energy's proprietary breakthroughs have now enabled systems to be simpler and more practical than previously possible resulting in a system design that can scale to long-term commercial system operation and maintenance.​</p>

Spring 2026 Intern

<div><b>About Thea Energy:&nbsp;</b><span>&nbsp;</span></div><div><span>Thea Energy is leveraging recent breakthroughs in stellarator physics and engineering to create a faster and simpler approach to commercializing fusion energy. The company is reinventing the stellarator using computer-controlled arrays of planar coils thereby replacing the intricate, complex modular magnets required in all other stellarator architectures. Thea Energy is on a mission to create a limitless source of zero emission energy for a sustainable future.&nbsp;&nbsp;</span></div><div><br></div><div><b>Spring 2026 Intern Program:</b></div><div><span>We are looking for talented technical interns to join our team in the spring of 2026!</span></div><br><br><h3>Program Details:</h3><ul><li>For school year internships, expected time dedication is flexible with an hourly salary and tailored to your academic schedule.</li></ul><h3>Positions: </h3><ul><li><b>Mechanical Engineering Intern (onsite)&nbsp;</b></li><li>Mechanical Engineering Interns will develop and exercise their design, analysis, and hands-on skills to support prototyping and stellarator design activities. Activities may include CAD and/or FEA model development, and will culminate in the delivery of functional custom components, tooling, fluid systems, and test equipment.</li><div><br></div><li><b>Manufacturing Engineering Intern (onsite)</b></li><li>Manufacturing Engineering Interns will support process development, fabrication and assembly, equipment design, and testing for Thea Energy’s HTS magnet prototyping programs. Manufacturing Engineering interns will be exposed to the physical and strategic aspects of the manufacture of HTS magnets, and will get hands-on experience operating equipment.</li><div><br></div><li><b>Magnet Engineering Intern (onsite)</b></li><li>Magnet Engineering Interns will support the design, build, testing, and performance analysis of Thea Energy’s custom HTS magnets. Activities may include: design of magnet components and tooling, development of FEA simulations (electromagnetic, mechanical, or thermal), operation of cryogenic tests and test equipment, and development of custom analytical tools to assess magnet performance.</li><div><br></div><li><b>Test Engineering Intern (onsite)</b></li><li>Test Engineering Interns will support the development and execution of test equipment, facilities, and operations associated with Thea Energy's custom HTS magnets and magnet-related hardware. To enable test execution and analysis of performance data, this role may include aspects of mechanical, electrical, instrumentation, and software engineering.</li><div><br></div><li><b>Fusion Technology Intern</b></li><li>Fusion Technology interns will assist scientists and engineers in designing and developing various subsystems for Thea Energy’s stellarator fusion devices.</li><div><br></div><li><b>Plasma Physics Intern</b>&nbsp;</li><li>Plasma Physics interns will work with scientists to model magnetically confined high temperature fusion plasmas using sophisticated computational tools.</li><div><br></div><li><b>Stellarator Optimization Intern</b></li><li>Stellarator Optimization Interns will support computational physicists and plasma physicists in optimizing stellarator magnetic geometry for Thea Energy’s next-generation fusion devices.</li></ul><h3>Project assignments are based on existing team needs at the time and may include, but are not limited to:</h3><ul><li>High-temperature superconducting magnet engineering, manufacturing, and testing</li><li>Cryogenic and vacuum systems</li><li>Instrumentation and diagnostic systems</li><li>Electrical and control systems engineering</li><li>Mechanical engineering</li><li>Various modeling, simulation, and data analysis roles including but not limited to COMSOL, ANSYS, Python, C++, MATLAB, Simulink, Microsoft Visio, LabVIEW</li></ul><h3>The ideal candidate will have most, if not all, of these requirements:</h3><ul><li>Enrolled in a STEM undergraduate or graduate program (mechanical engineering, aerospace engineering, materials science, electrical engineering, etc.)</li><li>Interest in clean and sustainable energy to combat climate change</li><li>Hands-on or computational experience through academic research, club projects, hackathons, or industry internships</li><li>Highly self-motivated, independent, and driven to solve problems</li><li>Authorized to work in the US</li><li>Willingness to learn new things!</li><li>Compensation: $18-25/hr Undergraduate and $26-30/hr Post-grad</li></ul><br><div><span>It’s not necessary to meet all of the skillsets outlined above. Please feel free to send us a note and tell us why you would still be a great fit for this role or Thea Energy.&nbsp;&nbsp;</span></div><div><span>&nbsp;&nbsp;</span></div><div><b>Diversity and Inclusion:&nbsp;</b><span>&nbsp;</span></div><div><span>Thea Energy is an equal opportunity employer committed to creating a company of diverse backgrounds. By creating a diverse environment, we will bring new ideas and approaches to solving some of the world’s hardest (and most important) problems. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, sexual orientation, gender identity or expression, national origin, family or marital status, age, disability, veteran’s status, or other characteristic protected by applicable laws and regulations.</span></div>

Spring 2026 InternNew

About the Job

About the Company

Thea Energy

Similar Jobs

Spring Semester 2026 Internship - Mechanical Engineering

Spring Semester 2026 Internship - Mechanical Engineering

Magnet Engineering Intern Fall 2025

Magnet Engineering Intern Fall 2025

Intern - Cryogenics Engineer - Spring Co-op 2026

Intern - Cryogenics Engineer - Spring Co-op 2026

Intern - Materials Engineer or Materials Test - Spring, Summer 2026

Intern - Materials Engineer or Materials Test - Spring, Summer 2026

Intern, Mechanical Engineering - Summer 2026

Intern, Mechanical Engineering - Summer 2026

Intern - Mechanical/Manufacturing Engineer - Spring, Summer 2026

Intern - Mechanical/Manufacturing Engineer - Spring, Summer 2026

Mechanical Engineering Intern Spring 2026

Mechanical Engineering Intern Spring 2026

2026 Mechanical Engineering Summer Internship

2026 Mechanical Engineering Summer Internship

Summer 2026 Internship - Electrical and Pulsed Power Engineering

Summer 2026 Internship - Electrical and Pulsed Power EngineeringNew

Summer 2026 Intern

Summer 2026 InternNew