# Senior Mechanical Engineer (Valves & Components) at Endurance Energy

- Company: Endurance Energy
- What the company does: Subsea Geothermal for Energy Abundance. Backed by First Round Capital.
- Company website: https://enduranceenergy.com
- Type: Startups
- Level: Senior
- Location: Seattle, WA
- Work setup: On-site
- Pay: $170K to $230K base salary per year (USD)
- Posted: 2026-11-04
- Apply by: 2026-12-19
- Apply: https://jobs.ashbyhq.com/endurance-energy/322a641f-7371-4c25-ad7b-d2deb0d84d6c?utm_source=1752vc&utm_medium=careers
- Page: https://www.1752.vc/careers/jobs/endurance-energy-senior-mechanical-engineer-valves-and-components/

## 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

Tags: Engineering

Source: 1752vc Careers, https://www.1752.vc/careers/jobs/endurance-energy-senior-mechanical-engineer-valves-and-components/