About the Role

Engine Test & Development Engineer

Exowatt is revolutionizing the energy landscape for the AI era with our groundbreaking P3 system that captures solar energy, stores it as heat, and generates electricity on demand. Founded in 2023 and backed by leading investors including Andreessen Horowitz, Sam Altman, and Felicis, we're committed to providing clean, modular, and scalable power that meets the rapidly growing demands of AI infrastructure. Our mission is to make sustainable renewable energy always available and almost free, enabling technological advancement while protecting our planet.

We are seeking an exceptional Engine Test & Development Engineer with deep expertise in testing reciprocating engines, to lead the development and optimization of our heat engine systems. This is a hands-on role and will involve testing, design, analysis, assembly and disassembly of Stirling engines. This role is critical to our mission of delivering reliable, cost-effective renewable energy at scale. You will be at the forefront of modernizing the next generation of stirling engine technology for modern energy applications, working directly with our thermal storage systems to convert stored heat into dispatchable electricity.

This position is based in Miami, FL. If selected, relocation to Miami, FL is required. Exowatt provides relocation assistance.

About the Company

Exowatt is a technology company focused on revolutionizing solar energy for the demands of modern, energy-intensive industries, particularly those supporting artificial intelligence infrastructure. Their flagship product, the Exowatt P3, captures solar energy using proprietary Fresnel lenses and heat exchangers, stores it efficiently as heat in high-capacity batteries, and then converts it to electricity on demand through a unique heat engine. This approach addresses one of solar’s biggest limitations—intermittency—by providing up to 24 hours of dispatchable, baseload power, making it ideal for data centers, utility companies, and other sectors that require reliable, scalable, and clean energy solutions.

What sets Exowatt apart is its commitment to sustainability, American manufacturing, and economic advantage. Their systems are factory-built in the U.S. using abundant, low-cost materials and do not rely on rare earth minerals, ensuring secure supply chains and supporting domestic jobs. Exowatt’s modular design allows for rapid deployment, easy scalability, and minimal maintenance over a 30-year lifespan. Employees and partners can take pride in contributing to a company recognized for innovation—such as winning Fast Company’s 2025 Next Big Thing in Tech Award—and for helping industries meet growing energy demands while reducing environmental impact and carbon emissions.
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Exowatt
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Exowatt

Engine Test & Development Engineer

Type
full-time
Department
Engineering
Location
Miami, FL
Salary
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