Senior Integration & Test EngineerEndurance is building the world's first modular subsea geothermal power plants, converting vast thermal resources under the ocean into gigawatts of baseload power. Backed by Founders Fund, Felicis, First Round Capital, and Point72 Ventures, our founding team includes veterans from SpaceX, Helion, and Robinhood. We have completed multiple deep-ocean deployments and are launching a long-term demonstration project this fall.
By leveraging modular design, manufacturing scale, efficient drilling, and latent cooling on the seafloor, we are pioneering a new category of energy that outperforms traditional sources on both environmental impact and cost.What You'll Be DoingAs a Senior Integration & Test Engineer at Endurance Energy, you will own the planning and execution of complex integration and test campaigns for some of the most extreme energy hardware ever deployed. You will work across mechanical, electrical, firmware, fluids, offshore operations, and manufacturing teams to bring first-of-a-kind systems from concept to validated hardware.This role combines the responsibilities of integration engineering, test engineering, manufacturing engineering, reliability engineering, and technical program execution. You will not simply support testing — you will define how systems are integrated, verified, instrumented, operated, and matured into reliable field hardware.You will be responsible for developing test architectures, designing integration and test tooling, operating hazardous test systems, debugging failures, and driving corrective actions to closure.
You will lead hardware through integration, qualification, environmental testing, deployment readiness, and field operations.You are expected to operate with extreme ownership and technical judgment. This includes identifying system-level risks before they become failures, driving standardization and operational rigor, and rapidly resolving issues under aggressive schedules. This is a highly hands-on role.
You will spend substantial time on the floor, in the lab, at test sites, and in the field working directly with hardware.Key ResponsibilitiesOwn integration and test campaigns for complex mechanical, electrical, fluid, and subsea systems from initial bring-up through deployment readinessDevelop and execute test strategies, procedures, acceptance criteria, and operational plans for development, qualification, and field testingDesign and build test infrastructure including fluid systems, pressure systems, electrical harnessing, instrumentation, DAQ setups, fixtures, and integration toolingLead hazardous test operations involving high pressure, high voltage, rotating machinery, thermal systems, and offshore hardwareDrive system integration across multidisciplinary hardware including mechanical assemblies, fluid systems, controls, instrumentation, and power systemsDebug complex hardware failures and lead root cause investigations across mechanical, electrical, software, controls, and operational domainsDevelop instrumentation plans and configure sensors, DAQ systems, telemetry, and automated test setupsDrive reliability improvements through failure analysis, operational feedback, test data review, and process standardizationDefine and improve integration workflows, test processes, build standards, checklists, and operational readiness reviewsWork closely with responsible engineers to ensure designs are testable, manufacturable, serviceable, and operationally robustSupport field deployments, offshore operations, commissioning activities, and recovery operationsOperate with urgency and technical rigor to close issues quickly while maintaining safety and hardware qualityMaintain clear documentation of procedures, test configurations, anomalies, corrective actions, and lessons learnedQualifications7+ years of experience in integration, test, manufacturing, reliability, or systems engineering roles involving complex hardware systemsDemonstrated experience leading integration and test efforts for multidisciplinary hardware programsStrong hands-on experience with mechanical systems, fluid systems, instrumentation, electrical integration, or electromechanical hardwareExperience planning and executing hazardous testing involving pressure systems, thermal systems, power systems, rotating machinery, or equivalent high-energy hardwareStrong troubleshooting skills across hardware, controls, instrumentation, and system interactionsExperience designing and building test infrastructure, tooling, fixtures, or automated test systemsAbility to read and interpret engineering drawings, schematics, P&IDs, wiring diagrams, and assembly documentationStrong systems-level thinking and ability to identify operational and reliability risks earlyHigh ownership mindset with the ability to independently drive complex technical efforts under aggressive timelinesExcellent communication skills and ability to coordinate across engineering, operations, manufacturing, and field teamsWillingness to travel and support offshore and remote field operations as neededPreferred SkillsExperience in aerospace, subsea, marine, energy, launch vehicle, or other high-performance hardware environmentsExperience operating or developing high-pressure fluid systems, thermal systems, turbomachinery, or power generation equipmentFamiliarity with DAQ systems, controls integration, telemetry, and automated testingExperience with environmental testing, vibration testing, thermal testing, or qualification campaignsExperience with root cause analysis methodologies and reliability engineering practicesBackground in manufacturing engineering or production test operationsExperience designing custom fixtures, integration tooling, or ground support equipmentHands-on fabrication experience including machining, welding, tube bending, or structural assemblyExperience supporting offshore operations, vessel-based testing, or remote field deploymentsFamiliarity with high-reliability fluid system standards and practices including Swagelok or equivalent systemsExperience operating in fast-paced prototype development environments with minimal process overheadBenefits & PerksGlobal Fieldwork: Travel to fascinating deployment sites along oceanic ridges in locations like the Pacific Northwest, Hawaii, Iceland, Japan, New Zealand, and the AzoresHands-on Experience: Participate in sea trials and deployment operations in partnership with leading oceanographic institutionsCutting-edge Development: Work with technology that spans high-power electronics, marine systems, and clean energyImpactful Work: Help solve one of the world's most pressing challengesCompetitive Compensation: Comprehensive salary and equity packagesBenefits: Vision, Dental, Health insurance coverageDive Certification: Company-sponsored recreational dive certification