Type One Energy · 1 month ago
Senior Mechanical Engineer- Plasma Fueling
Knoxville, TN
Full-time
Hybrid
Senior LevelType One Energy is a mission-driven company aiming to provide sustainable fusion power. They are seeking a Senior Mechanical Engineer to contribute to the design, development, and testing of complex mechanical systems in plasma fueling, collaborating closely with various specialists.
Clean EnergyEnergyNuclear
Responsibilities
Lead and support concept development, trade studies, and design optimization for plasma fueling systems
Design complex, integrated mechanical systems compliant with national and international codes, standards, and safety requirements
Advance system and component TRL through structured design phases, testing, and gate reviews
Produce high-quality CAD models, engineering drawings, and GD&T-compliant documentation
Perform thermal, structural, and sensitivity analyses using analytical and numerical methods (FEA)
Develop and execute laboratory test plans, including functional testing, data acquisition, and design of experiments (DOE)
Participate in and lead design reviews, risk assessments, and TRL evaluations
Author technical reports, test plans, quality plans, and scopes of work
Support supplier selection, technical oversight, and integration of procured components
Apply safety-by-design principles, including hydrogen and cryogenic safety considerations
Communicate technical concepts clearly through presentations and written documentation
Collaborate across disciplines to integrate plasma fueling systems into the broader fusion device architecture
Qualification
Required
Bachelor's or Master's degree in Mechanical Engineering or a related field
Mid-career experience designing mechanical systems for UHV, cryogenic, hydrogen, or nuclear environments
Demonstrated experience with requirements generation, concept selection, and system integration
Strong proficiency in CAD, FEA, and GD&T
Experience advancing hardware through TRL phases, including testing and formal reviews
Hands-on experience with laboratory testing, instrumentation, and data acquisition
Ability to independently author technical documentation and interface with cross-functional teams
Strong analytical, organizational, and problem-solving skills
Preferred
Cryogenic systems design and thermal analysis
HV/UHV system design experience
Hydrogen safety experience
Basic knowledge of tritium handling and fusion fuel cycles
Experience with project management and schedule coordination
Background in commercialization environments, including gated development processes
Supplier management and external partner interaction
Experience with complex, tightly integrated systems
Creative, “out-of-the-box” engineering mindset
Fusion or advanced energy system experience (bonus)
Benefits
Stock and share options 📈
Relocation allowance 💰
Insurance plans 🩺
401k retirement options 💸
And many more great voluntary benefits 👀
Company
Type One Energy
Stellarator technology to transform energy markets with fusion power.
Founded in 2019
51-200 employees
H1B Sponsorship
Type One Energy has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (3)
2023 (1)
Funding
Current Stage
Growth StageTotal Funding
$169.5MKey Investors
Breakthrough Energy VenturesUS Department of Energy
2026-01-14Convertible Note· $87M
2024-07-30Seed· $53.5M
2023-05-31Grant
Leadership Team
David Anderson
Co-Founder and VP - Systems Engineering
Chris Hegna
VIce President of Stellarator Physics Optimization and Principal Scientist
Recent News
ClimateHack Weekly
2026-01-17
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Company data provided by crunchbase