Plasma-Materials Scientist
Thea Energy
Company Overview
Thea Energy, originally known as Princeton Stellarators Inc.
Princeton, New Jersey, United States
2022
Employee count and revenue figures for 2023 or later remain undisclosed publicly, though it operates as a private fusion startup with funding from the U.S. Department of Energy's Milestone-Based Fusion Development Program as one of eight recipients (source: pppl.gov).
What They Do
Thea Energy focuses on advancing fusion energy through innovative stellarator designs, utilizing arrays of planar high-temperature superconducting (HTS) coils to achieve stable magnetic confinement. This approach simplifies the traditional complex 3D modular magnets found in conventional stellarators, allowing for more efficient and effective fusion energy production (source: fusionxinvest.com). Their flagship system, named Eos after the Greek goddess of dawn, is designed to produce neutrons for tritium breeding, which is essential for validating their technology and enabling future commercial applications, such as steady-state fusion power plants (source: heatmap.news). The company's technology leverages modern computing power and HTS materials to optimize designs, providing inherent steady-state stability that mitigates disruptions commonly associated with tokamaks (source: thea.energy). Their target markets primarily include commercial fusion energy developers, with an initial focus on neutron sources for industrial applications, although specific customer segments have not been detailed (source: fusionxinvest.com). A key differentiator for Thea Energy is its rapid in-house manufacturing capabilities, which utilize tools like a CNC machine and a specialized device named "Zeus" for winding HTS tape, allowing for quick iterations and reducing reliance on outsourced labor (source: heatmap.news).
Projects & Track Record
As of now, Thea Energy has not completed any projects, as it is still in the early stages of development focused on prototyping its Eos system. This system is intended to serve as the first demonstrator for neutron and tritium production, but specific completion dates, capacity specifications, or project locations have not been reported (source: fusionxinvest.com). The company is actively engaged in building and testing planar HTS coil prototypes at its facility in Kearny, New Jersey, which is equipped with an open office space, laboratory, and small-scale manufacturing capabilities for magnet arrays (source: heatmap.news). Thea Energy's origins at the Princeton Plasma Physics Laboratory (PPPL) provide it with strong partnerships and a foundation in stellarator research, with co-founder David Gates being a notable physicist and Edison Patent Award winner for his contributions to the field (source: pppl.gov). Currently, the geographic presence of Thea Energy is limited to New Jersey, and there have been no announcements regarding expansion, although the location benefits from proximity to significant fusion research hubs in the Northeast, including PPPL and Columbia University (source: heatmap.news).
Recent Developments
In 2023, prior to its rebranding, Princeton Stellarators Inc. received funding from the U.S. Department of Energy's Milestone-Based Fusion Development Program, which supports advancements in stellarator technology toward commercialization (source: pppl.gov). However, there have been no reported contracts, acquisitions, mergers, or additional funding rounds in the last two years, as the company focuses on proprietary breakthroughs without public milestones or awards beyond Gates' personal Edison Patent (source: thea.energy). Thea Energy's website encourages subscription updates but does not list any recent press releases regarding major announcements, indicating a relatively quiet period in terms of public communications (source: thea.energy).
Working There
Information about working at Thea Energy is limited, but it appears to be suitable for job seekers interested in a small, early-stage fusion startup environment. Roles likely encompass engineering positions focused on magnet design, HTS winding, and CNC manufacturing, as well as physics research and operational roles, inferred from the facility's mix of open desks, lab work, and prototype building (source: heatmap.news). Hiring seems to be concentrated at the New Jersey site, with no remote or other location postings documented (source: fusionxinvest.com). The company culture appears to blend the agility of a tech startup with the practicalities of a laboratory environment, emphasizing local unionized labor for scalability and rapid prototyping, rather than relying on elite academic talent, all within a space that prioritizes manufacturing efficiency (source: heatmap.news). However, no documented benefits, salary data, or employee testimonials are available in public sources.
Contact
Last updated on 2025-12-27 | Report an issue
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.
We are seeking a highly motivated Plasma-Materials Scientist to join our team, focusing on plasma-facing material development. The ideal candidate will possess a strong background in the research and development of plasma-surface interactions, with particular emphasis on material survivability evaluation, plasma and heat-induced erosion processes, and plasma contamination effects in fusion-relevant environments. You will work with high autonomy and ownership, and contribute to cutting-edge research and development in Thea Energy's stellarator systems.
Key Responsibilities
- Contribute to the construction and commissioning of a plasma device and diagnostics for exposing and evaluating plasma-facing material candidates.
- Collaborate with plasma-material exposure facilities and use materials characterization tools for surface evaluation.
- Provide technical guidance across team members in plasma device operation, plasma-material performance assessment and experimental planning.
- Participate in stellarator plasma-facing component operational campaign planning.
- Utilize computational and simulation tools to perform plasma-surface interaction simulations, thermal analysis, and contribute to multi-physics modeling efforts.
Required Experience & Skillsets
- Master's degree in materials science, engineering, applied plasma physics, chemistry, or a related field.
- Knowledge of basic plasma physics.
- Experience with vacuum systems.
- Experience with experimental plasma setups and diagnostics such as industrial plasma sources, RF plasmas, spectroscopic diagnostics, laser-based diagnostics, and electrostatic probes.
- Experience with surface analysis techniques such as electron microscopy, atomic-scale microscopy, and elemental composition analysis methods (e.g. XPS, EDX, Raman).
- Experience with one or more of the following: Python, MATLAB, FEA tools, COMSOL, C++, Fortran.
- Ability to work independently and manage projects.
- Strong attention to detail
- A passion for advancing fusion energy to commercialization.
- Willingness to collaborate with a diverse team of scientists and engineers within the company and externally.
Ideal Experience & Skillsets
- PhD in applied plasma physics or a related field.
- Experience with fusion boundary plasmas and/or low-temperature plasmas.
- Experience with linear plasma devices.
- Experience in tokamak or stellarator divertor research.
- Experience with ERO2.0, TRIDYN, SDTrimSP/TRIM, WALLDYN, or RustBCA.
Company Benefits
- Salary range $100,000-$160,000
- Comprehensive health benefits (e.g. medical/dental/vision)
- Employee equity stock options
- 20 days PTO
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.
We may use artificial intelligence (AI) tools to support parts of the hiring process, such as reviewing applications, analyzing resumes, or assessing responses. These tools assist our recruitment team but do not replace human judgment. Final hiring decisions are ultimately made by humans. If you would like more information about how your data is processed, please contact us.
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About the role
December 23, 2025
Full Time
Company
January 13, 2026
On-site
USD 100k–160k yearly
- Kearny, New Jersey, United States
Master's degree required; PhD preferred
UTC-05:00
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