Fusion Plasma Physicist - Diagnostics & Fast-Ion Transport

Thea Energy

$100K — $120K *
Energy & Utilities
Less than 5 years of experience
Job Overview by Ladders

Qualifications

  • Ph.D. in Plasma Physics, Fusion Science, Applied Physics, or related field.
  • Hands-on experience in a plasma physics lab, including low-temperature magnetized plasma or magnetic confinement fusion.
  • Expertise in developing or analyzing plasma diagnostics like spectroscopy and fast camera imaging.
  • Proficiency in quantitative data analysis using tools like Python and MATLAB.
  • Strong communication skills with experience in collaborative scientific projects.

Responsibilities

  • Design, build, and calibrate advanced plasma diagnostics for Eos stellarators.
  • Manage vacuum integration, hardware setup, and signal processing systems.
  • Ensure reliable data acquisition by maintaining diagnostic hardware during experiments.
  • Develop experimental campaigns focused on fast-ion transport and confinement physics.
  • Execute run plans and formulate proposals for plasma facility operations.
  • Analyze multi-diagnostic datasets to extract critical physical parameters.
  • Act as a liaison to academic and national laboratory partners and co-author research publications.

Benefits

  • Comprehensive health benefits, including medical, dental, and vision insurance.
  • Employee equity stock options to foster investment in the company.
  • 20 days of paid time off (PTO) to promote work-life balance.
Full Job Description
Position Overview:

We are seeking a highly motivated and skilled Experimental Plasma Physicist to join our research team. In this role, you will design, deploy, and plan operation of cutting-edge plasma diagnostics, spearhead experimental campaigns focused on fast-ion transport dynamics and actively collaborate with external academic and national laboratory partners.

Key Responsibilities:

  • Design, build, and calibrate advanced plasma diagnostics (e.g., optical emission spectroscopy, laser-based diagnostics, probes, fast-ion loss detectors) tailored to Eos stellarator magnetic configurations.
  • Oversee vacuum system integration, high-magnetic-field hardware setup, and signal processing chains.
  • Maintain and upgrade diagnostic hardware to ensure reliable, high-resolution data acquisition during experimental runs.
  • Design and develop experimental campaigns targeting fast-ion transport, wave-particle interactions, and confinement physics.
  • Formulate experimental proposals, set operational parameters, and execute run plans on experimental plasma facilities.
  • Analyze complex multi-diagnostic datasets using Python, MATLAB, or modern scientific software to extract physical parameters (e.g., density profiles, velocity distributions, and fluctuation spectrums).
  • Serve as a key liaison to external entities, including academic institutions, national laboratories, and international research consortia.
  • Co-author peer-reviewed journal articles and represent the organization at major conferences (e.g., APS Division of Plasma Physics).
  • Mentor graduate students, junior researchers, and intern cohorts in laboratory safety, experimental protocols, and data analysis pipelines.


Required Experience & Skillsets:

  • Education: Ph.D. in Plasma Physics, Fusion Science, Applied Physics, or a closely related engineering/scientific discipline.
  • Experimental Track Record: Proven hands-on experience working in a plasma physics laboratory setting (e.g., low-temperature magnetized plasma, dusty plasma, or magnetic confinement fusion devices).
  • Diagnostics Expertise: Demonstrated experience developing, operating, or analyzing data from plasma diagnostics (spectroscopy, Langmuir/Emissive probes, fast camera imaging, or particle detectors).
  • Data Analysis & Modeling: Proficiency with quantitative data analysis tools (Python, MATLAB, Julia) and familiarity with transport modeling software or synthetic diagnostic codes.
  • Communication & Teamwork: Strong verbal and written communication skills with a proven track record of cross-institutional scientific collaboration.

Preferred / Desirable Qualifications
  • Experience with strongly magnetized plasma environments (e.g., tokamaks, stellarators, superconducting magnet facilities or high-field discharge systems).
  • Background in fast-ion loss modeling or validation of fast-ion diagnostic synthetic models.
  • Active involvement in scientific outreach, or mentoring programs.


Company Benefits:

  • Salary range $100,000 - $120,000
  • 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.

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