<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>

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Revolutionizing fusion energy with simpler stellarator designs to scale sustainable, disruption-free power.

<div><b style="font-size:24px;">About Thea Energy:</b></div><div>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.</div><div><br></div><div><br></div><div><b style="font-size:18px;">Position Overview:</b></div><div><span style="font-size:12pt;">Thea Energy is seeking experienced, highly motivated test engineers to join its rapidly growing team. The test engineering roles will design, commission, and operate test facilities for high temperature superconducting (“HTS”) tapes, current leads, and magnets. HTS magnets and power distribution are foundational components of Thea Energy’s planar coil stellarator, making compact, simpler, and lower-cost fusion systems possible. As part of a rapidly growing team, you’ll be part of the organizational build-up of a leading fusion energy company. These roles will have a high degree of autonomy and must be able to move quickly. The Thea Energy team is comprised of self-motivated, creative, and fun individuals with an excitement for solving complex problems.</span></div><br><br><h3>Key Responsibility Areas:</h3><ul><li>Rapidly design, commission, and operate test and measurement systems and facilities</li><li>Develop specifications for the testing of HTS tapes, current leads, and magnets</li><li>Develop and execute test processes and procedures</li><li>Develop  and integrate cryogenic, vacuum, and Instrumentation &amp; Control systems</li><li>Develop data analysis software and algorithms using Python or similar</li><li>Provide integration and test support for—and occasionally develop—LabVIEW software</li><li>Collaborate with vendors to procure measurement and test equipment</li><li>Track and report results and progress against program goals and milestones</li><li>Communicate and collaborate with internal and external stakeholders</li></ul><h3>Ideal Experience &amp; Skillsets:</h3><ul><li>Experience designing or testing superconductors, magnets, cryogenics, or vacuum systems</li><li>Experience designing or testing high-pressure or cryogenic fluid networks</li><li>Experience using CAD software (e.g. SOLIDWORKS, CATIA, NX, etc.)Experience specifying and implementing precision instrumentation and data acquisition systems</li><li>Experience operating or developing LabVIEW-based test facilities</li><li>Experience writing and executing test plans</li><li>Ability to work through and solve highly multidisciplinary engineering problems</li><li>Ability to take initiative, work independently and as part of a team</li><li>Ability to execute and flourish in a fast-paced, rapidly changing environment</li><li>Comfortable working to aggressive deadlines</li><li>Exceptional work ethic</li><li>Clear communication and collaboration skills</li><li>Innate desire to learn, innovate, and critique ideas including one’s own</li><li>At least a bachelor’s degree in electrical engineering, mechanical engineering, or related fields</li><li>Experience with magnetic confinement fusion, aerospace, medical devices, or other highly technical industries is ideal</li></ul><h3>Company Benefits:</h3><ul><li>Competitive salary</li><li>Comprehensive health benefits (e.g. medical/dental/vision)</li><li>Employee equity stock options</li><li>Open vacation policies</li><li>Work-life balance</li></ul><br><div>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.</div><div><br></div><div><br></div><div><b style="font-size:18px;">Diversity and Inclusion:</b></div><div>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.</div>

Test Engineer

<div><b style="font-size:13.5pt;">About Thea Energy: </b><span style="font-size:13.5pt;"> </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><span style="font-size:10.5pt;">  </span></div><div><b style="font-size:13.5pt;">Position Overview: </b><span style="font-size:13.5pt;"> </span></div><div><span style="font-size:12pt;">Thea Energy is seeking a highly motivated human resources &amp; recruiting generalist to join its rapidly growing team. In this role, you will support ongoing recruitment efforts, cultivate a positive workplace environment, and implement HR best practices. In this role, you will interact with the Company’s finance &amp; operations and technical teams to facilitate interview processes, manage onboarding of new hires, and help to grow its strong company culture and overall employee experience. This role will have a high degree of autonomy, and the ideal candidate must be able to move quickly. Your efforts will directly contribute to the organization's success by supporting HR initiatives and attracting, developing, and retraining top talent. Thea Energy’s dynamic team is made up of self-motivated individuals with an excitement for solving complex problems.  </span></div><br><br><h3>Key Responsibility Areas:  </h3><ul><li>Assist in managing talent recruitment, screening and interviewing </li><li>Utilize our Applicant Tracking System (ATS), Lever, and maintain accurate and up to date records </li><li>Coordinate employee onboarding and new hire orientation processes </li><li>Develop company policies and evolve processes as the company grows  </li><li>Support Thea Energy’s diversity, equity, and inclusion (DEI) initiatives and community engagement plans </li><li>Coordinate employee benefits packages </li><li>Work with the Company’s leadership to support employee growth &amp; development </li><li>Nurture and track career paths for team members </li><li>Advise in employee review and compensation discussions</li><li>Maintain HR related files and information </li><li>Employ strategies to build, maintain, and grow the Company’s workplace culture </li><li>Plan employee engagement initiatives and retention programs as well as team-building activities </li><li>Provide input on policy, programs, and procedures </li></ul><h3>Ideal Experience &amp; Skillsets: </h3><ul><li>2+ years of internal technical recruitment experience </li><li>2+ years of HR experience with a related degree in Human Resources, Business Administration, a related field </li><li>Proven organizational skills with the ability to manage multiple projects and priorities </li><li>Excellent negotiation, communication, and collaboration skills </li><li>Ability to thrive in a fast-paced, dynamic startup environment </li><li>Ability to work across cross-functional teams to support HR challenges and recruitment needs  </li><li>Background in human resources and recruitment within a hard-tech environment</li><li>Experience with Lever ATS or similar ATS tools </li><li>Passionate about DEI in the workplace </li><li>Well organized, structured and process driven with a speed &amp; execution mindset </li><li>Excellent oral, written, and interpersonal communication skills </li><li>Strong ethics and discretion  </li><li>Ability to find creative solutions to problems </li><li>Exceptional work ethic </li></ul><h3>Company Benefits:  </h3><ul><li>Competitive salary  </li><li>Comprehensive health benefits (e.g. medical/dental/vision)  </li><li>Employee equity stock options  </li><li>Open vacation policies  </li><li>Work-life balance  </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>

HR & Recruiting Generalist

<div><b style="font-size:24px;">About Thea Energy:</b></div><div>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.</div><div><br></div><div><b style="font-size:13.5pt;">Position Overview:</b></div><div><span style="font-size:12pt;">Thea Energy is seeking an experienced, highly motivated Control Systems Engineer — LabView Developer to join its rapidly growing team. The Control Systems Engineer will have ownership of the design, development, and commissioning of the control system for complex equipment within Thea Energy’s stellarator fusion demonstration plant. As part of a rapidly growing team, you’ll be part of the organizational build-up of a leading fusion energy company. This role will have a high degree of autonomy and must be able to move quickly. The Thea Energy team is comprised of self-motivated, creative, and fun individuals with an excitement for solving complex problems.</span></div><br><br><h3>Key Responsibility Areas:</h3><ul><li>Work with a team of experts in developing controls for Thea Energy’s systems.</li><li>Architect, program, and document cutting-edge distributed Data Acquisition and Control (DAC) projects utilizing National Instruments hardware and software, such as LabVIEW, VeriStand, TestStand, SystemLink incorporating DAQ, PXI, cRIO, and RIO (FPGA) architectures.</li><li>Develop modular, readable, and reusable LabVIEW code, emphasizing reliability and continual improvement.</li><li>Create engineering tools, including both desktop and web-based testing applications.</li><li>Integrate VHDL and C codes into hardware-in-the-loop (HIL) systems, utilizing both NI and open-source hardware and software platforms.</li><li>Collaborate with hardware and systems engineers to define interfaces and requirements and ensure seamless integration of DAC/HIL solutions.</li><li>Troubleshoot and swiftly resolve issues in LabVIEW-based DAC/HIL systems.</li><li>Develop and execute comprehensive test plans.</li><li>Document design specifications, test procedures, and user manuals for automation and acquisition systems.</li></ul><h3>Ideal Experience &amp; Skillsets:</h3><ul><li>Extensive experience as a control engineer on complex, large-scale systems.</li><li>Experience with magnetic confinement fusion, aerospace, or other highly technical industries.</li><li>B.S. or M.S. in Computer Science, Electrical Engineering, or a related physics or engineering discipline.</li><li>5+ years of hands-on LabVIEW development experience; experience with VeriStand, TestStand and SystemLink.</li><li>Proven success in advanced LabVIEW programming, focusing on Data Acquisition and Control or HIL systems, within scientific, industrial, or research environments.</li><li>Proficiency with National Instruments hardware, including cRIO, PXIe, and expertise in both Windows and RT Linux environments.</li><li>Competency in HIL/SIL software architecture.</li><li>Proficient in the development and optimization of LabVIEW applications and LabVIEW Certification (Certified LabVIEW Developer and/or Architect) is advantageous.</li><li>Exceptional work ethic and communication skills.</li></ul><h3>Company Benefits:</h3><ul><li>Competitive salary</li><li>Comprehensive health benefits (e.g. medical/dental/vision)</li><li>Employee equity stock options</li><li>Open vacation policies</li><li>Work-life balance</li></ul><br><div>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.</div><div><br></div><div><br></div><div><b style="font-size:18px;">Diversity and Inclusion:</b></div><div>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.</div>

Control Systems Engineer - LabView Developer

<div><b style="font-size:24px;">About Thea Energy:</b></div><div>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.</div><div><br></div><div><b style="font-size:14pt;">Fusion Energy Engineering Intern Program:</b></div><div><br></div><div><span style="font-size:11pt;">We are looking for talented technical interns to join our stellar team for the summer or during the school year!</span></div><br><br><h3>Program Details:</h3><ul><li>Summer 12-16 week internship program and/or flexible school year internship</li><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><div>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. (This role will require at least 3 days onsite per week.)</div><li><b>Manufacturing Engineering Intern (onsite)</b></li><div>Manufacturing Engineering Interns will support process development, fabrication and assembly, equipment design, and testing for Thea Energy’s HTS magnet prototyping programs. A Manufacturing Engineering intern will be exposed to the physical and strategic aspects of the manufacture of HTS magnets, and will get hands-on experience operating equipment. </div><li><b>Magnet Engineering Intern (onsite)</b></li><div>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. </div><li><b>Test Engineering Intern (onsite)</b></li><div>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 <a href="http://engineering.Fusion">engineering.</a></div><li><b>Fusion Technology Intern</b></li><div>Fusion Technology interns will assist scientists and engineers in designing and developing various subsystems for Thea Energy’s stellarator fusion devices. </div><li><b>Plasma Physics Intern</b> </li><div>Plasma Physics interns will work with scientists to model magnetically confined high temperature fusion plasmas using sophisticated computational tools. </div><li><b>Stellarator Optimization Intern</b></li><div>Stellarator Optimization Interns will support computational physicists and plasma physicists in optimizing stellarator magnetic geometry for Thea Energy’s next-generation fusion devices. </div></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></ul><br><div>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.</div><div><br></div><div><br></div><div><b style="font-size:18px;">Diversity and Inclusion:</b></div><div>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.</div>

Manufacturing Engineering Intern Summer 2025

<div><b style="font-size:24px;">About Thea Energy:</b></div><div>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.</div><div><br></div><div><br></div><div><b style="font-size:18px;">Position Overview:</b></div><div>Thea Energy is seeking experienced, highly motivated magnet engineers to join its rapidly growing team. The magnet engineering roles will design, build, and test high temperature superconducting (“HTS”) magnets. HTS magnets are foundational components of Thea Energy’s planar coil stellarator, making compact, simpler, and lower-cost fusion systems possible. As part of a rapidly growing team, you’ll be part of the organizational build-up of a leading fusion energy company. These roles will have a high degree of autonomy and must be able to move quickly. The Thea Energy team is comprised of self-motivated, creative, and fun individuals with an excitement for solving complex problems.</div><div><br></div><br><br><h3>Key Responsibility Areas:</h3><ul><li>Rapidly design, build, and test HTS magnets</li><li>Develop specifications for magnets based on system design and performance goals</li><li>Optimize magnet design and run analysis using Multiphysics simulation software (e.g. Ansys EM, Structure, COMSOL, etc.)</li><li>Develop design tools, data analysis software, and algorithms using Python or similar</li><li>Incorporate design for manufacturing principles and support first builds</li><li>Produce design specifications and collaborate with vendors to get quotes and deliver hardware that meets qualifications</li><li>Support the implementation of tooling and manufacturing</li><li>Design and execute magnet testing</li><li>Track and report results and progress against program goals and milestones</li><li>Communicate and collaborate with internal and external stakeholders</li></ul><h3>Ideal Experience &amp; Skillsets:</h3><ul><li>Experience with magnets, cryogenics, vacuum systems, or transformer design</li><li>Experience in design using CAD software (e.g. Solidworks, CATIA, NX, etc.)</li><li>Experience with Ansys and/or COMSOL</li><li>Experience specifying machining, welding, and fabrication requirements</li><li>Ability to work through and solve highly multidisciplinary engineering problems</li><li>Ability to take initiative, work independently and as part of a team</li><li>Ability to execute and flourish in a fast-paced, rapidly changing environment</li><li>Comfortable working to aggressive deadlines</li><li>Exceptional work ethic </li><li>Strong team member with clear communication and collaboration skills</li><li>Innate desire to learn, innovate, and critique ideas including one’s own</li><li>At least a bachelor’s degree in physics, computer science, electrical engineering, mechanical engineering, materials engineering, or related fields</li><li>Experience with magnetic confinement fusion, aerospace, medical devices, or other highly technical industries is ideal</li></ul><h3>Company Benefits:</h3><ul><li>Competitive salary</li><li>Comprehensive health benefits (e.g. medical/dental/vision)</li><li>Employee equity stock options</li><li>Open vacation policies</li><li>Work-life balance</li></ul><br><div>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.</div><div><br></div><div><br></div><div><b style="font-size:18px;">Diversity and Inclusion:</b></div><div>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.</div>

HTS Magnet Engineer

<div><b style="font-size:24px;">About Thea Energy:</b></div><div>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.</div><div><br></div><div><b style="font-size:18px;">Overview:</b></div><div>Thea Energy is looking for YOU! If we do not have a job posted that directly matches your skillset but you are interested in joining the team, we encourage you to apply through this general application. </div><div><br></div><div>Please include your resume and a cover letter detailing why you would be a good fit for our team!</div><br><br><br><div>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.</div><div><br></div><div><br></div><div><b style="font-size:18px;">Diversity and Inclusion:</b></div><div>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.</div>

Thea Energy

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Jobs (6)

Test Engineer

Test Engineer

HR & Recruiting Generalist

HR & Recruiting Generalist

Control Systems Engineer - LabView Developer

Control Systems Engineer - LabView Developer

Manufacturing Engineering Intern Summer 2025

Manufacturing Engineering Intern Summer 2025

HTS Magnet Engineer

HTS Magnet Engineer

Fusion Industry General Application

Fusion Industry General Application

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