Senior Integration Technician | Seattle, WA

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. We’re 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, Robinhood, Helion, and Neuralink, with specialized expertise in complex thermal and fluid systems and business development.

We’re seeking an exceptional Senior Integration Technician to build, assemble, and test the mechanical and fluid systems that power our subsea and onshore platforms. This role sits at the center of hardware execution, turning designs into fully integrated, test-ready systems.

This is a critical position where your speed, precision, and judgment directly impact our ability to hit hardware milestones on aggressive timelines.

The Role

As a Senior Integration Technician at Endurance Energy, you will work alongside mechanical, fluids, and electrical engineers to assemble, plumb, instrument, and test complex systems under real-world conditions.

You will be responsible for taking subsystems from parts to fully integrated hardware, pressure-tight, leak-free, instrumented, and ready for test. You will play a key role in debugging integration issues, improving build processes, and ensuring systems are safe and robust before deployment.

You are expected to operate with high ownership on the floor: driving build quality, identifying issues early, and pushing systems to readiness without waiting for direction.

Key Responsibilities

• Assemble mechanical and fluid systems including pressure vessels, piping, valves, and heat exchangers

• Perform tubing and piping integration including routing, bending, cutting, and fitting

• Execute high-quality plumbing of test systems and subsea hardware (Swagelok, compression fittings, welded systems, etc.)

• Install sensors, instrumentation, and support hardware for test readiness

• Perform pressure testing, leak checking, and system validation (hydrostatic and pneumatic)

• Support system bring-up and debugging alongside engineering teams

• Read and interpret engineering drawings, P&IDs, and assembly documentation

• Identify and resolve fit-up, tolerance, and integration issues in real time

• Drive clean, organized, and repeatable build processes on the floor

• Document builds, test setups, and issues for engineering and QA traceability

• Support rapid prototyping and iteration under tight timelines

• Maintain a safe working environment when operating high-pressure and high-temperature systems

Qualifications

• 5+ years of hands-on experience in mechanical assembly, fluid systems, or integration roles

• Demonstrated experience assembling and testing complex mechanical or fluid systems

• Strong experience with tubing, piping, fittings, and fluid system integration

• Ability to read and interpret mechanical drawings and P&IDs

• Experience with pressure testing, leak detection, and system validation

• Strong mechanical intuition and ability to troubleshoot integration issues quickly

• High attention to detail and craftsmanship in assembly work

• Track record of working effectively in fast-paced, prototype-driven environments

• High ownership mindset and ability to operate independently with minimal supervision

• Strong communication skills and ability to work closely with engineers

Preferred Skills

• Experience with orbital tube welding or other high-reliability welding processes

• Background in high-pressure systems, process piping, or thermal systems

• Experience in marine, subsea, aerospace, or energy hardware environments

• Familiarity with Swagelok or equivalent fluid system standards and best practices

• Light fabrication and manual machining experience (lathe, mill, drill press)

• Experience supporting test operations and building custom test infrastructure

• Familiarity with cleanliness standards and contamination control for fluid systems

• Ability to contribute to fixture design and integration tooling

Benefits & Perks

• Hands-on Experience: Work directly with large-scale, cutting-edge clean energy systems and participate in sea trials

• Impact-Driven Work: Contribute to solving one of the world’s most pressing challenges—clean, reliable power generation

• Competitive Compensation: Comprehensive salary

• Benefits: Health, dental, and vision coverage

• PTO: unlimited with advanced notice

Endurance is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.