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Senior Thermofluids EngineerJoin us in our mission to commercialize fusion 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.

Knoxville, TN

Highly Competitive Plus Benefits

Permanent, full time

Thermofluids Engineering Manager

The Senior Thermofluids Engineer will be responsible for the design, analysis, and delivery of thermal fluid systems supporting the Infinity One stellarator and future fusion power plant development efforts. The Senior Engineer is an expert leader of multiple, complex projects and initiatives, often influencing business direction through technical decisions. This role will contribute directly to the development and integration of the plant’s steam generator and associated heat transport systems, applying software-based analysis, simulation, and thermal-hydraulic modeling to guide design decisions across multiple projects. The successful candidate will collaborate closely with internal teams and key engineering partners, including AECOM, to ensure effective integration of thermal-fluid systems within broader plant architectures.

• Perform analytical thermodynamic, fluid dynamics, and heat transfer calculations on the machine's core and support systems to support design and performance evaluation.
• Design and/or specify key components of the system such as piping, pumps, valves, heat exchangers.
• Develop PFDs / P&IDs and other relevant design documentation for this system.
• Contribute to steam generator design, sizing, integration, and performance evaluation in collaboration with AECOM and other engineering partners.
• Set technical strategy for projects and initiatives.
• Use software tools and simulation methods to provide technical guidance, trade studies, and design support across multiple concurrent thermofluids projects.

• Bachelor’s degree in Mechanical Engineering, Chemical Engineering, or related field.
• Demonstrated experience in analytical thermodynamics, heat transfer, and fluid dynamics calculations.
• Demonstrated experience with designing and operating water-cooling systems and associated components.
• Experience performing analytical and numerical analysis of thermal/fluid systems using simulation and property tools such as REFPROP, GASPAK, HePAK, ASPEN HYSYS, or other relevant software.
• Demonstrated ability to use modelling and simulation results to provide technical guidance across multiple projects and inform system-level engineering decisions.
• Experience drafting PFD and P&ID.
• Strong problem-solving skills and ability to work cross-functionally in a collaborative engineering environment.
• Excellent written and verbal communication skills.

• Master’s or Ph.D. in a relevant engineering discipline.
• Experience with steam generators is desired.
• Experience working on fusion machines is a plus.
• Experience in system-level modeling, controls integration, and data analysis.
• Experience with HAZAN, HAZOPS, system commissioning and operation.
• Ability to own and execute on multiple projects.
• Experience in a fast-paced R&D or startup environment.

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

• A hybrid work policy
• Stock options
• Relocation allowance
• Insurance plans
• 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. Our 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.

This position may require access to technology, technical data, software, or other information that is subject to U.S. export control laws and regulations. Any offer of employment will be contingent upon the Company's ability to comply with applicable U.S. Export Control Laws, including obtaining any required government authorizations. Type One Energy is a Global, U.S.-based company that develops and utilizes technologies subject to U.S. export control and trade compliance regulations. Certain positions may require access to controlled technologies, technical data, software, or other information regulated by U.S. Export Control Laws. For positions involving access to export-controlled technology or information, the Company may be required to determine whether any government authorization or license is needed before such access can be provided. Any offer of employment for such positions may be contingent upon the Company's ability to comply with applicable U.S. Export Control Laws and obtain any required government authorizations.

For positions based in the United States, Type One Energy participates in E-Verify and verifies the identity and employment authorization of newly hired employees in accordance with applicable federal law. Employees hired to work in the United States will be required to complete the Form I-9 employment eligibility verification process upon hire.

Type One Energy is an equal opportunity employer. Employment decisions are made based on qualifications, merit, business needs, and compliance with applicable laws and regulations.

Type One Energy collects personal information from applicants for recruitment, hiring, and related business purposes. We process applicant information in accordance with applicable privacy and data protection laws and take reasonable measures to protect the confidentiality and security of personal information. By applying for a position, you acknowledge that your personal information may be collected, used, stored, transferred, and disclosed as necessary to evaluate your candidacy, conduct pre-employment screenings where permitted by law, and comply with legal and regulatory requirements.