Principal Geologist

The role

The Principal Geologist will identify and characterize subsea geothermal sites globally. This role involves combining marine geology techniques with drilling operations to develop deployment strategies and conduct field operations.

What you will do

• Take ownership of geological and drilling decision-making
• Lead geological site assessment and characterization for subsea geothermal installations
• Develop drilling strategies and wellbore designs
• Analyze seafloor geology, heat flow patterns, and hydrothermal fluid characteristics
• Interpret geophysical surveys, bathymetric data, and subsurface imaging
• Design and oversee geological sampling programs using ROVs, submersibles, and specialized drilling equipment
• Collaborate with marine operations teams to plan and execute subsea drilling campaigns
• Assess geological risks including seismic activity, seafloor stability, and thermal system variability
• Create geological models to predict long-term reservoir performance
• Support environmental impact assessments and regulatory permitting processes

Required qualifications

• Bachelor’s or master’s degree in Geology, or Petroleum Engineering or related discipline
• Direct experience with drilling operations, including oil and gas, geothermal systems (including EGS), and/or deep water wells (2,000+ ft.)
• Track record managing drilling projects with cumulative budgets in the $10M–$100M+ range
• Familiarity with drilling techniques, wellbore design, and completion techniques
• 4+ years of experience in the subsurface fluid resource sector (oil and gas, solution mining, or geothermal)
• Demonstrated ability to manage project budgets and control costs
• Experience interpreting geophysical data, well logs, and other subsurface geological information
• Background in hydrothermal systems, volcanic geology, or geothermal resource assessment
• Ability to thrive in ambiguous, fast-moving environments with minimal structure and maximum autonomy
• Comfortable making critical geological decisions with incomplete data and tight deadlines
• Strong bias toward action and hands-on problem solving
• Excellent adaptability and willingness to tackle challenges outside traditional geological scope

Nice to have

• MS or PhD
• Experience at an operator
• Offshore geoscience operations, including field experience on research vessels or offshore drilling platforms
• Experience with ROV/AUV operations and subsea geological sampling techniques
• Knowledge of reservoir engineering principles and geothermal fluid dynamics
• Understanding of seafloor drilling systems (riserless drilling, seafloor templates, subsea wellheads)
• Experience with geological risk assessment for offshore energy projects
• Background in structural geology, tectonics, or volcanology

Benefits

• Health, Dental, and Vision insurance coverage
• Flexible PTO including 12 paid company holidays
• Travel to deployment sites in Pacific Northwest, Hawaii, Iceland, Japan, New Zealand, and the Azores
• Participate in sea trials and deployment operations
• Work with technology spanning high-power electronics, marine systems, and clean energy
• Company-sponsored recreational dive certification
• Access to the company boat
• Free meals and snacks

About the company

Endurance is building the world's first modular subsea geothermal power plants, converting vast thermal resources under the ocean into gigawatts of baseload power. The founding team includes veterans from SpaceX, Helion, Blue Origin, and Apple.