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Geothermal Engineer Jobs in Seattle, WA (NOW HIRING)

Endurance Energy

Staff Software Engineer

Seattle, WA · On-site

Endurance Energy is pioneering the world's first modular subsea geothermal power plants, aiming to convert ocean thermal resources into significant baseload power. As a Staff Software Engineer, you ...

Endurance Energy

Super Engineer

Seattle, WA · On-site

$100K - $300K/yr

About Endurance Endurance is building the world's first modular subsea geothermal power plants ... Endurance Energy needs high ownership, technically excellent engineers across all disciplines and ...

Endurance Energy

Senior Mechanical Engineer

Seattle, WA · On-site

$170K - $230K/yr

About Endurance Endurance is building the world's first modular subsea geothermal power plants ... What you'll be doing As a Senior Mechanical Engineer, you will own critical mechanical systems ...

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All JobsGeothermal Engineer JobsGeothermal Engineer Jobs in Seattle, WA

Geothermal Engineer information

See Seattle, WA salary details

$49.5K

$103.6K

$138.3K

How much do geothermal engineer jobs pay per year?

As of Aug 23, 2026, the average yearly pay for geothermal engineer in Seattle, WA is $103,625.00, according to ZipRecruiter salary data. Most workers in this role earn between $88,200.00 and $117,800.00 per year, depending on experience, location, and employer.

What does a geothermal engineer do?

A Geothermal Engineer designs, develops, and maintains systems that harness heat from the Earth to generate energy or provide direct heating. They analyze geological data to determine suitable locations for geothermal projects, oversee drilling operations, and optimize the efficiency of geothermal power plants. Their work includes assessing environmental impact, ensuring regulatory compliance, and improving energy extraction techniques.

What skills and qualifications are needed to be a geothermal engineer?

A Geothermal Engineer should possess a strong background in geoscience, thermodynamics, and mechanical or civil engineering, typically holding a bachelor's or master's degree in a related field. Familiarity with modeling software (such as GeoCAD or reservoir simulation tools), geothermal system design, and relevant safety certifications are commonly required. Strong problem-solving skills, teamwork, and effective communication set top candidates apart. These abilities are vital for designing efficient geothermal systems, navigating multidisciplinary project teams, and ensuring safe, cost-effective energy solutions.

What challenges do geothermal engineers face in their day-to-day work?

Geothermal Engineers often face challenges such as accurately assessing underground resources, managing drilling risks, and addressing environmental or regulatory concerns. The job requires troubleshooting complex mechanical systems and adapting to site-specific geological conditions, which can be unpredictable. Collaboration with environmental scientists, project managers, and construction teams is frequent, so flexibility and clear communication are important. Overcoming these challenges is rewarding and crucial to advancing reliable, sustainable energy solutions.

What are popular job titles related to Geothermal Engineer jobs in Seattle, WA?

For Geothermal Engineer jobs in Seattle, WA, the most frequently searched job titles are:

What job categories do people searching Geothermal Engineer jobs in Seattle, WA look for?

The top searched job categories for Geothermal Engineer jobs in Seattle, WA are:

Geothermal Engineer jobs near you
Infographic showing various Geothermal Engineer job openings in Seattle, WA as of August 2026, with employment types broken down into 91% Full Time, 4% Part Time, and 5% Contract. Highlights an 87% Physical, 5% Hybrid, and 8% Remote job distribution, with an average salary of $103,625 per year, or $49.8 per hour.

Senior Test Infrastructure Software Engineer

Endurance Energy

Seattle, WA • On-site

$125K - $163K/yr

Full-time

Re-posted 28 days ago

Job description

Job Summary:
Endurance Energy is building the world’s first modular subsea geothermal power plants, converting vast thermal resources under the ocean into gigawatts of baseload power. As a Senior Test Infrastructure Software Engineer, you will build the software and infrastructure necessary for testing components and systems in subsea geothermal power plants, working closely with various engineering teams to ensure rapid validation and integration of testing capabilities.
Responsibilities:
• Design and build the software infrastructure that powers testing across Endurance, from component qualification through full integrated system validation
• Architect and implement hardware-in-the-loop (HITL) and simulation environments that allow firmware and controls software to be tested under realistic operating conditions and failure scenarios
• Develop software for automated test execution, operator interfaces, data acquisition, visualization, storage, and analysis
• Design and integrate the electrical and controls infrastructure behind new test systems, including DAQs, PLCs, VFDs, sensors, instrumentation, and industrial communication networks
• Partner closely with firmware, electrical, mechanical, controls, and systems engineers to rapidly develop new testing capabilities
• Build scrappy one-off test systems when speed matters, then evolve successful concepts into scalable engineering infrastructure
• Write production-quality software while establishing the architecture and engineering patterns that future test systems will build upon
• Own the technical foundation of Endurance’s testing ecosystem as it grows from individual laboratory experiments to full power plant validation
• Help shape the test infrastructure organization as it grows, including interviewing and onboarding future engineers
Qualifications:
Required:
• 5+ years of software engineering experience
• Track record building software for hardware systems, including automated testing, hardware-in-the-loop (HITL), industrial controls, robotics, aerospace, automotive, or other complex electromechanical products
• Strong software engineering skills, particularly in Python, with experience in C, C++, Rust, or similar systems programming languages preferred
• Experience interfacing software with physical hardware, instrumentation, embedded systems, or industrial equipment
• Technical fluency strong enough to hold credibility with mechanical, electrical, firmware, and systems engineers
• Comfort working hands-on in the lab, including wiring sensors, debugging electrical systems, integrating instrumentation, and bringing up new test hardware
• Ability to work onsite in Seattle and travel to deployment sites as required
Preferred:
• Experience building hardware-in-the-loop (HITL) or software-in-the-loop (SITL) environments
• Experience with industrial automation platforms including PLCs, DAQs, VFDs, National Instruments, Beckhoff, Siemens, or similar systems
• Experience developing simulation or emulation software for embedded or controls applications
• Familiarity with industrial communication protocols such as EtherCAT, CAN, Modbus, or OPC UA
• Experience designing data acquisition and telemetry systems for hardware development
• Background in aerospace, robotics, automotive, energy, defense, or other fast-paced hardware industries
• Experience building internal engineering infrastructure that enables other engineers to move faster
Company:
Endurance Energy develops subsea geothermal energy projects to generate continuous electricity from deep-sea hydrothermal resources. Founded in 2008, the company is headquartered in Seattle, USA, with a team of 11-50 employees. The company is currently Early Stage.

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