Plasma-Material Interaction (PMI) Manager)

Job Description

Job Description

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.

Position Overview:

We are seeking an experienced Plasma-Material Interaction (PMI) Manager to lead the development of high-performance plasma-facing materials and components (PFCs) for our Eos and Helios stellarators. In this role, you will bridge plasma physics, materials engineering, and component integration to address high heat-flux management, surface erosion, and hydrogen isotope retention in quasi-axisymmetric, planar-coil stellarator architectures. You will direct in-house experimental campaigns, oversee specialized test facilities, and manage key external research and procurement partnerships to de-risk wall environments for steady-state fusion operations.

Key responsibilities:

• Direct the research, design, and qualification of plasma-facing materials—including first-wall armor and divertor target materials for Eos and Helios stellarators.
• Oversee the preparation, execution, and analysis of PMI experiments on the Eos stellarator and dedicated in-house test facilities.
• Act as the technical lead for external collaborations with national laboratories, university research groups, and commercial vendors for material synthesis, neutron irradiation testing, surface diagnostics, and PFC component procurement.
• Lead the computational efforts to simulate erosion, redeposition, and thermal shock degradation in real time.
• Work closely with mechanical design and physics modeling teams to translate PMI simulation and experimental data into validated inputs for plasma transport and engineering designs.

Required Experience & Skillsets:

Required Qualifications

• Education: Ph.D. in Materials Science, Plasma Physics, Nuclear Engineering, Mechanical Engineering, or a closely related discipline.
• Experience: 8+ years of technical experience in plasma-surface interactions, high-temperature materials, or magnetic confinement fusion engineering, with at least 3+ years managing technical projects or multidisciplinary teams.
• Technical Expertise:
• In-depth understanding of edge plasma dynamics, sputtering, redeposition, helium ash/hydrogen isotope retention, and high heat flux behavior.
• Practical experience designing, building, or operating plasma-facing test rigs or boundary diagnostics on magnetic confinement devices (stellarators or tokamaks).
• Strong knowledge of materials testing, characterization methods, and procurement workflows for high-temperature and plasma-exposed materials.
• Leadership & Communication: Track record of driving complex R&D initiatives, managing external vendor and research contracts, and working against tight engineering deadlines.

Preferred Qualifications

• Direct exposure to fusion plasma physics, stellarator configurations, or fusion plasma divertor concepts such as X-point divertors.

• Experience with computational modeling tools, including coupled plasma-transport and surface kinetics codes (SOLPS, UEDGE, EMC3-EIRENE, ERO2.0, WallDYN), BCA tools (SDTrimSP, RustBCA, TRIM), and FEA thermomechanical software (ANSYS, COMSOL).

Company Benefits:

• Salary range $130,000-$165,000
• 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 and identifying potential inconsistencies or verification signals in application materials based on available information. 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.