Senior Mechanical Engineer- Plasma Fueling

Join us in our mission to commercialize fusion energy

About Type One Energy

Type One Energy Group is mission-driven to provide sustainable affordable fusion power to the world. Established in 2019 and venture-backed in 2023 the company is led by a team of globally recognized fusion scientists with a strong track record of building state-of-the-art stellarator fusion machines together with veteran business leaders experienced in scaling companies and commercializing energy technologies

If you are searching for the best new ideas and share our vision join us as a Senior Mechanical Engineer- Plasma Fueling. This is what you need to know:

Location: Knoxville TN

Salary: Highly Competitive Plus Benefits

Contract: Permanent full time

Reporting to: Engineering Resource Manager

Your role in the mission:

Type One Energy is seeking an experienced Senior Mechanical Engineer to join our Plasma Fueling Team. This role is ideal for an Engineer with strong system design experience who is motivated to grow into technical ownership of key projects.

The successful candidate will contribute to the design development and testing of complex mechanical systems operating in ultra-high vacuum (UHV) cryogenic and hydrogen environments while advancing the technology readiness level (TRL) of critical plasma fueling components. This role requires close collaboration with plasma physicists engineers safety specialists and external suppliers.

• 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

What youll need

• Bachelors or Masters 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

Desired Qualifications:

• 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)

We offer:

In addition to a basic salary and yearly bonus you will also get

• Stock and share options

• Relocation allowance

• Insurance plans

• 401k retirement options

• And many more great voluntary benefits

Type One Energy applies proven advanced manufacturing methods modern computational physics and high-field superconducting magnets to develop its optimized stellarator fusion energy system. Its FusionDirect development program pursues the lowest-risk shortest-schedule path to a fusion power plant over the coming decade using a partner-intensive and capital-efficient strategy.

Type One Energy is committed to community engagement in the development and deployment of its clean energy technology. For more information visit or follow us on LinkedIn.

Equal Opportunity Statement

Type One Energy is an equal opportunity employer. We value diversity searching for the best new ideas and remaining open to unique perspectives. Therefore all qualified applicants will receive consideration for employment independent of race color religion sex sexual orientation gender identity national origin disability or veteran status age or any other characteristics protected by applicable federal state or local laws. All qualified individuals are encouraged to apply.