Senior Software Engineer — HITL & Controls for Subsea Power

Endurance Energy Inc.; Seattle (WA); On-site; USD 140,000 - 230,000; Full time

Benefits offered by this job

Equity in compensation

Health, Dental, Vision insurance

Flexible PTO

Global fieldwork travel

Company boat access

Dive certification

Job summary

Endurance Energy Inc. is seeking a Senior/Principal Software Engineer to build the software stack, controls, UIs, and simulation infrastructure for a subsea geothermal power platform.

You will ship production software from architecture to operation, collaborating with firmware, electrical, and mechanical teams to enable rapid design, testing, and deployment. You will own testing infrastructure from lab experiments to full plant validation, including hardware‑in‑the‑loop and high‑fidelity

Qualifications

• 5+ years of software engineering experience.
• Strong software engineering skills in Python, Rust, C++, C, or similar languages.
• Demonstrated ability to ship production software end‑to‑end, from architecture through deployment and operation.
• Track record building software for hardware systems, including automated testing, HITL, industrial controls, robotics, aerospace, or other complex electromechanical products.

Responsibilities

• Design and build the software ecosystem that powers testing across Endurance.
• Architect and implement HITL and simulation environments for firmware and controls software.
• Develop software for automated test execution, operator interfaces, data acquisition, visualization, storage, and analysis.
• Design and integrate electrical and controls infrastructure behind new test systems (PCBs, DAQs, PLCs, VFDs, sensors).
• Partner with firmware, electrical, mechanical, controls, and systems engineers to rapidly develop new testing capabilities.

Skills

Python

Rust

C++

C

End-to-end

Tools

HITL (hardware-in-the-loop)

SITL (software-in-the-loop)

PLC

DAQ

VFD

EtherCAT

Job description

Endurance Energy Inc. is seeking a Senior/Principal Software Engineer to build the software stack, controls, UIs, and simulation infrastructure for a subsea geothermal power platform.

You will ship production software from architecture to operation, collaborating with firmware, electrical, and mechanical teams to enable rapid design, testing, and deployment. You will own testing infrastructure from lab experiments to full plant validation, including hardware‑in‑the‑loop and high‑fidelity