What you'll be doing 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. 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 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