Senior Test Infrastructure Software Engineer

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. Backed by Founders Fund, Felicis, First Round Capital, and Point72 Ventures, our founding team includes veterans from SpaceX, Helion, Blue Origin, and Apple.

Responsibilities

• Design and build software infrastructure for testing from component qualification to full system validation
• Architect and implement hardware-in-the-loop (HITL) and simulation environments
• Develop software for automated test execution, operator interfaces, data acquisition, and visualization
• Design and integrate electrical and controls infrastructure including DAQs, PLCs, VFDs, and sensors
• Partner with firmware, electrical, mechanical, and controls engineers to develop testing capabilities
• Build scalable engineering infrastructure and establish architecture patterns

Requirements

• 5+ years of software engineering experience
• Track record building software for hardware systems (HITL, industrial controls, robotics, or aerospace)
• Strong software engineering skills, particularly in Python
• Experience interfacing software with physical hardware, instrumentation, or embedded systems
• Ability to work hands-on in a lab environment (wiring sensors, debugging electrical systems)
• Ability to work onsite in Seattle and travel to deployment sites as required

Preferred Qualifications

• Experience with C, C++, or Rust
• Experience with industrial automation platforms (National Instruments, Beckhoff, Siemens)
• Familiarity with industrial protocols like EtherCAT, CAN, Modbus, or OPC UA
• Experience developing simulation or emulation software
• Background in aerospace, robotics, automotive, or energy industries

Benefits

• Global fieldwork at oceanic ridge deployment sites
• Participation in sea trials and deployment operations
• Competitive salary and equity packages
• Health, dental, and vision insurance
• Company-sponsored recreational dive certification