Senior/Principal Software Engineer

Responsibilities

• Design and build testing software from component qualification through full integrated-system validation.
• Architect hardware-in-the-loop and simulation environments for firmware and controls testing under realistic conditions and failure scenarios.
• Develop automated test execution, operator interfaces, data acquisition, visualization, storage, and analysis software.
• Design and integrate electrical and controls infrastructure including PCBs, DAQs, PLCs, VFDs, sensors, instrumentation, and industrial communication networks.
• Partner with firmware, electrical, mechanical, controls, and systems engineers to develop testing capabilities.
• Build one-off laboratory test systems and evolve successful designs into scalable engineering infrastructure.
• Establish the architecture and engineering patterns for Endurance’s testing ecosystem.
• Help shape the test infrastructure organization, including interviewing and onboarding future engineers.

Requirements

• 5+ years of software engineering experience.
• Strong programming skills in Python, Rust, C++, C, or similar languages.
• Demonstrated ability to ship production software end-to-end from architecture through deployment and operation.
• Experience building software for hardware systems, including automated testing, hardware-in-the-loop, industrial controls, robotics, aerospace, automotive, or other complex electromechanical products.
• Technical fluency sufficient to work credibly with mechanical, electrical, firmware, and systems engineers.
• Ability to work onsite in Seattle and travel to deployment sites as required.
• Familiarity with Rust and Nix is preferred.
• Experience with hardware-in-the-loop or software-in-the-loop environments is preferred.
• Experience developing simulation or emulation software for embedded or controls applications is preferred.
• Experience with industrial automation platforms such as PLCs, DAQs, VFDs, National Instruments, Beckhoff, or Siemens is preferred.
• Familiarity with EtherCAT, CAN, Modbus, or OPC UA is preferred.
• Experience designing data acquisition and telemetry systems for hardware development is preferred.
• Background in aerospace, robotics, automotive, energy, defense, or other fast-paced hardware industries is preferred.
• Hands-on laboratory experience wiring sensors, debugging electrical systems, integrating instrumentation, and bringing up test hardware is preferred.
• Experience building internal engineering infrastructure that enables other engineers to move faster is preferred.

Benefits

• Health, dental, and vision insurance coverage.
• Flexible PTO and 12 paid company holidays.
• Full-time employment with equity packages and competitive base salaries; specific compensation is not stated.
• Travel to deployment sites in locations including the Pacific Northwest, Hawaii, Iceland, Japan, New Zealand, and the Azores.
• Opportunities to participate in sea trials and deployment operations with oceanographic institutions.
• Company-sponsored recreational dive certification.
• Access to the company boat, free meals, and snacks.
• Onsite work in Seattle with travel to deployment sites as required.