Subsea Geothermal for Energy Abundance. Backed by First Round Capital.
About the role
Our seafloor power plants move 250-350 °C geothermal fluid through a closed loop 1-3 km underwater, surrounded by near-freezing seawater at 100-300 bar. Every valve, seal, fitting, compensator, and filter in that loop has to hold hot, corrosive, scaling fluid on one side and the deep ocean on the other, for years, with no one able to service it. Nobody makes these parts off the shelf. We design, build, test, and deploy them. Found on 1752vc Careers, the job board for startup and VC roles.
What they're looking for
- Bachelor's degree in mechanical engineering, aerospace engineering, or a related engineering discipline
- 6+ years of professional experience designing, testing, or manufacturing fluid-control hardware (valves, regulators, seals, pumps, or similar) for demanding environments
- Ownership of at least one fluid component from concept through qualification and fielded use
- Experience designing propulsion valves or flow-control devices for rocket engines or feed systems (cryogenic, hot-gas, or high-pressure)
- Equivalent depth in subsea oil & gas components (trees, chokes, API 17D/6A), high- temperature steam or geothermal hardware, or nuclear-grade pressure-boundary components
- Strong understanding of seal and seat design, leakage physics, and seal behavior across large temperature ranges
More about this role
Endurance is building the world's first modular subsea geothermal power plants, converting vast thermal resources under the ocean into gigawatts of baseload power. Backed by Founders Fund, Felicis, First Round Capital, and Point72 Ventures, our founding team includes veterans from SpaceX, Helion, Blue Origin, and Apple. We have completed multiple deep-ocean deployments to subsea volcanoes and are launching a long-term demonstration project this fall. By leveraging modular design, manufacturing scale, efficient drilling, and latent cooling on the seafloor, we are pioneering a new category of energy that outperforms traditional sources on environmental impact, deployment speed, and cost.
Our seafloor power plants move 250-350 °C geothermal fluid through a closed loop 1-3 km underwater, surrounded by near-freezing seawater at 100-300 bar. Every valve, seal, fitting, compensator, and filter in that loop has to hold hot, corrosive, scaling fluid on one side and the deep ocean on the other, for years, with no one able to service it. Nobody makes these parts off the shelf. We design, build, test, and deploy them.
In this role you will focus on the fluid components of the plant:...
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