Integration & Test Specialist

Endurance Energy•Seattle, WA

About The Position

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

Requirements

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

Nice To Haves

Experience with orbital tube welding and/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

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