Senior/Principal Integration & Test Engineer (Fluids & Controls)

Seattle, WA. Posted 6 months ago

The role

You will own the planning and execution of complex integration and test campaigns for extreme energy hardware. You will work across mechanical, electrical, firmware, fluids, offshore operations, and manufacturing teams to bring systems from concept to validated hardware.

What you will do

Own integration and test campaigns for complex mechanical, electrical, fluid, and subsea systems
Develop and execute test strategies, procedures, acceptance criteria, and operational plans
Design and build test infrastructure including fluid systems, pressure systems, and electrical harnessing
Lead hazardous test operations involving high pressure, high voltage, and thermal systems
Drive system integration across multidisciplinary hardware
Debug complex hardware failures and lead root cause investigations
Develop instrumentation plans and configure sensors and DAQ systems
Drive reliability improvements through failure analysis and test data review
Define and improve integration workflows, test processes, and build standards
Support field deployments, offshore operations, commissioning, and recovery operations

Required qualifications

7+ years of experience in integration, test, manufacturing, reliability, or systems engineering roles involving complex hardware systems
Demonstrated experience leading integration and test efforts for multidisciplinary hardware programs
Strong hands-on experience with mechanical systems, fluid systems, instrumentation, electrical integration, or electromechanical hardware
Experience planning and executing hazardous testing involving pressure systems, thermal systems, power systems, rotating machinery, or equivalent high-energy hardware
Strong troubleshooting skills across hardware, controls, instrumentation, and system interactions
Experience designing and building test infrastructure, tooling, fixtures, or automated test systems
Ability to read and interpret engineering drawings, schematics, P&IDs, wiring diagrams, and assembly documentation
Strong systems-level thinking and ability to identify operational and reliability risks early
High ownership mindset with the ability to independently drive complex technical efforts under aggressive timelines
Excellent communication skills and ability to coordinate across engineering, operations, manufacturing, and field teams
Willingness to travel and support offshore and remote field operations as needed

Nice to have

Experience in aerospace, subsea, marine, energy, launch vehicle, or other high-performance hardware environments
Experience operating or developing high-pressure fluid systems, thermal systems, turbomachinery, or power generation equipment
Familiarity with DAQ systems, controls integration, telemetry, and automated testing
Experience with environmental testing, vibration testing, thermal testing, or qualification campaigns
Experience with root cause analysis methodologies and reliability engineering practices
Background in manufacturing engineering or production test operations
Experience designing custom fixtures, integration tooling, or ground support equipment
Hands-on fabrication experience including machining, welding, tube bending, or structural assembly
Experience supporting offshore operations, vessel-based testing, or remote field deployments
Familiarity with high-reliability fluid system standards and practices including Swagelok or equivalent systems

Benefits

Health, Dental, and Vision insurance coverage
Flexible PTO including 12 paid company holidays
Travel to deployment sites along oceanic ridges
Participate in sea trials and deployment operations
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.