Endurance is developing modular seafloor geothermal power plants that harness the vast thermal energy beneath the ocean floor to provide gigawatts of clean reliable energy. Were addressing the critical power bottleneck facing AI infrastructure development while creating a path toward energy independence and decarbonization across the globe.
Backed by premier venture capital firms including First Round Capital and Point72 Ventures our exceptional founding team includes veterans from SpaceX (Dragon and Starship programs) and Neuralink with specialized expertise in complex thermal and fluid systems.
Were seeking a talented Thermal and Fluids Systems Engineer to join our team at our headquarters in Seattle where youll help design and develop the core power cycle for our revolutionary seafloor generators.
As a Founding Thermal and Fluids Systems Engineer at Endurance youll be a key early member of our team building the power generation cycle at the heart of our subsea geothermal power plants. You will rapidly design test and optimize the components of a compact power cycle playing a pivotal role in bringing this novel energy system from concept to reality. This role focuses primarily on systems engineering and the integration of proven components into robust field-ready systems but also requires the flexibility creativity and entrepreneurial mindset essential to an early-stage startup. Youll work across multiple technical domains and help shape the foundation of our energy systems as the company scales.
Your first major project will be the design build and testing of a 100kWe compact power cycle at our site in Seattle. This full-scale loop will validate the performance and reliability of our core power generation technology in a controlled land-based environment before it is packaged for subsea deployment.
Lead the thermal-fluid design of new power cycle architectures and components including turbines heat exchangers pumps condensers and piping systems.
Assemble operate and validate a 100kw scale thermodynamic power cycle test loop
Design and build test rigs for component and system testing.
Carry out detailed analysis and component optimization using numerical simulation tools.
Support the design of other mission critical systems such as geothermal and hydrothermal heat exchangers and deep sea vehicles.
Support business development activities including supplier meetings technical presentations and customer interactions
Help establish system engineering and modelling tools processes and documentation for future team growth
Bachelors degree in mechanical or aerospace engineering or related engineering discipline (preferably with a masters)
3 years of experience in thermal and fluid systems modeling and/or design.
Experience designing building testing and deploying test rigs for system validation.
Ability to act and execute in a scrappy and entrepreneurial manner
Strong problem-solving skills and attention to detail
Excellent communication and teamwork abilities
Strong background in the design and analysis of thermal-fluid systems
Experience designing turbomachinery pumps compressors or turbines.
Proficiency in developing low-order modeling tools for system sizing trade studies and rapid design iteration including transient system modeling
Skilled in CFD and numerical simulation tools for fluid flow and heat transfer analysis (e.g. ANSYS Fluent OpenFOAM)
Hands-on experience setting up instrumenting and operating experimental test rigs and facilities
Familiarity with basic mechanical design and manufacturing processes including CAD-based design and prototyping
Bonus - Experience in either marine systems power generation geothermal energy or supercritical fluids
Global Fieldwork: Travel to fascinating deployment sites along oceanic ridges in locations like the Pacific Northwest Hawaii Iceland Japan New Zealand and the Azores
Hands-on Experience: Participate in sea trials and deployment operations in partnership with leading oceanographic institutions
Cutting-Edge Development: Work with technology that spans high-power electronics marine systems and clean energy
Impact-Driven Work: Help solve one of the worlds most pressing challenges - clean reliable power generation
Competitive Compensation: Comprehensive salary and equity packages
Benefits: Vision Dental Health insurance coverage
Dive Certification: Company-sponsored recreational dive certification
PTO: Unlimited (with advanced notice)
This role has a compensation range of $150000 -$200000 base salary.
Endurance is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.
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