Thea Energy

Develops fusion power via planar-coil stellarators

Test Engineer Intern

Hardware Validation & TestingConfirmed live in the last 24 hours

Internship · Spring 2027Kearny, NJ, USA$21 - $25 /hrIn-person

About the Job

Requirements

Currently pursuing a Bachelor's, Master's, or PhD in Mechanical Engineering, Aerospace Engineering, Materials Science, or a related technical field.
Have a strong foundational understanding of engineering drawings and spatial mechanics; exposure to Geometric Dimensioning and Tolerancing is a plus.
Have hands-on project experience involving mechanical or electrical hardware design, build, and test, such as Formula SAE, rocketry club, or robotics club.
Be familiar with relevant hardware and software for developing test controls, including LabVIEW, Python, National Instruments, thermocouples, and voltage taps.
Have direct experience with fabrication or assembly processes such as machining with hand tools, manual mills, or CNC; fastened and bonded assemblies; or soldering.
Be familiar with computer-aided design software such as SolidWorks or NX.
Be able to work through and solve multidisciplinary engineering problems.
Be able to take initiative and work independently and as part of a team.
Have clear communication and collaboration skills.
Be able to occasionally lift objects up to 50 pounds.
Be able to perform activities such as typing, standing, or sitting for extended periods.
Be able to work in a facility containing industrial hazards, including heat, cold, noise, fumes, strong magnets, high voltage, high current, pressure systems, and cryogenics.

Responsibilities

Assist in generating and updating test documentation, including standard operating procedures, work instructions, and quality criteria for high-temperature superconducting magnet testing.
Support the design, prototyping, and commissioning of custom test fixtures and equipment.
Work alongside test engineers, magnet designers, and manufacturing engineers to incorporate lessons learned from testing into future designs.
Manage virtual and physical inventory, organize assembly areas, and update manufacturing bills of materials.
Assist with hardware procurement, evaluate vendor specifications, and ensure incoming parts meet quality standards.
Track test metrics and results, and track progress against critical program milestones.

Desired Qualifications

Exposure to Geometric Dimensioning and Tolerancing.

About Thea Energy:

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.

Key Responsibility Areas:

Assist in generating and updating test documentation, including standard operating procedures (SOPs), work instructions, and quality criteria for HTS magnet testing.

Support design, prototyping, and commissioning of custom test fixtures and equipment.

Work alongside test engineers, magnet designers, and manufacturing engineers to incorporate "lessons learned" from testing into future designs.

Manage virtual and physical inventory, organize assembly areas, and update manufacturing Bills of Materials (BOMs).

Assist hardware procurement, evaluating vendor specs, and ensuring incoming parts meet quality standards.

Track test metrics and results, and progress against critical program milestones.

Ideal Experience & Skillsets:

Currently pursuing a Bachelor’s, Master’s or PhD in Mechanical Engineering, Aerospace Engineering, Materials Science, or a related technical field.
Strong foundational understanding of engineering drawings and spatial mechanics (exposure to GD&T is a major plus).
Hands-on project experience (e.g., Formula SAE, rocketry club, robotics club, etc.) involving mechanical or electrical hardware design, build, and test.
Familiarity with relevant hardware and software for developing test controls including LabView, Python, National Instruments, thermocouples and voltage taps, and similar equipment and software
Direct experience with fabrication or assembly processes such as machining (hand tools, manual mill, CNC), fastened and bonded assemblies, soldering, etc.
Familiarity with CAD software (e.g., SolidWorks, NX).
Ability to work through and solve highly multidisciplinary engineering problems
Ability to take initiative, work independently and as part of a team
Exceptional work ethic, with clear communication and collaboration skills
Ability to occasionally lift objects up to 50 lbs.

Company Benefits:

Salary range $21 - $25/hour

Requirements:

Ability to occasionally lift up to 50 lbs.
Ability to perform activities such as typing, standing, or sitting for extended periods of time.
Ability to work in a facility that contains industrial hazards including heat, cold, noise, fumes, strong magnets, high voltage, high current, pressure systems, and cryogenics.

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.

Diversity and Inclusion:

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.

About the Company

Thea Energy

Develops fusion power via planar-coil stellarators

Thea Energy develops fusion-based power technology to provide scalable, zero-emission baseload electricity for utilities and heavy industry. Its approach uses a reimagined stellarator with flat, planar superconducting coils controlled by software-defined systems, replacing the traditional complex magnet geometry to lower costs and improve serviceability. Its Eos neutron-source device and Helios commercial power plant concept illustrate a pipeline from research to grid-ready power, backed by DOE milestones and public-private partnerships. The company aims to commercialize fusion as a dependable grid-level energy source and win long-term offtake agreements with utilities and large customers.

Company size: 51-200
Company stage: Grant
Total funding: $145.8M
Headquarters: Princeton, NJ
Founded: 2022

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