Software Engineer - Test Infrastructure

Muon seeks a Software Test Infrastructure Engineer to join our satellite development team in San Jose, CA. You will be responsible for designing, building, and maintaining the software test infrastructure used to test the hardware components, such as avionics computers and other electronics, as well as the software that forms the backbone of Muon's spacecraft. You will contribute to an ecosystem of test and development tooling used by a large swath of the company for hardware and software testing across Muon’s Halo platform.

The ideal candidate has experience developing test automation frameworks, hardware-in-the-loop systems, and manufacturing testing. Previous experience working on interdisciplinary projects, such as robotics, autonomous vehicles, avionics, or aerospace, is a strong asset.

• Design, develop, and maintain robust and scalable software test frameworks and infrastructure for hardware-in-the-loop (HIL) and component-level testing.
• Create and automate tests for avionics computers and other electronic hardware components used in Muon's spacecraft.
• Collaborate closely with hardware, avionics, and software engineers to define test requirements, develop comprehensive test plans, and troubleshoot issues identified during testing.
• Integrate test infrastructure with continuous integration and continuous deployment (CI/CD) systems to streamline the testing process.
• Develop tools, utilities, and processes to improve test efficiency, test coverage, and the reliability of test results.
• Analyze test data, identify failures or anomalies, and work collaboratively with relevant engineering teams to investigate and resolve hardware and software issues.
• Maintain documentation for test infrastructure, procedures, and equipment.
• Contribute to an inclusive, collaborative, and team-oriented culture that fosters high productivity and opportunities for growth.

• B.S. or equivalent experience in Computer Science, Electrical Engineering, Aerospace Engineering, Robotics, or a related field.
• 3+ years of experience in software development, with a significant focus on test automation or test infrastructure development.
• Strong programming skills, particularly in Python.
• Proven experience with testing embedded systems or hardware components.
• Experience developing or working with software for hardware-in-the-loop (HIL) testbeds.
• Familiarity with common electronics test equipment (e.g., oscilloscopes, multimeters, power supplies, logic analyzers).
• Experience with version control systems (e.g., Git) and continuous integration/continuous deployment (CI/CD) pipelines (e.g. Github Actions).
• Strong sense of accountability, integrity, and team focus with extensive multi-tasking and organizational experience.

• Experience specifically testing avionics or aerospace hardware systems.
• Experience with real-time operating systems (RTOS).
• Knowledge of communication protocols common in aerospace (e.g., CAN, Ethernet, RS-422/485).
• Experience with data acquisition (DAQ) systems and sensor integration.
• Programming experience in C/C++ or Rust.
• Track record of scrappiness and getting it done.
• Salary range information:
  The stated salary range for this role is $144K - $190K and will depend on a candidate's skills, geographic location, qualifications, and experience as defined during the interview process.

Founded in 2021, Muon Space is an end-to-end Space Systems Provider that designs, builds, and operates LEO satellite constellations delivering mission-critical data. Our state-of-the-art facility in Silicon Valley is optimized for manufacturing spacecraft and rapid payload integration n Space is dedicated to delivering Earth Intelligence for a safer and more resilient world.

At Muon, compensation includes salary plus equity and benefits such as medical, dental, and vision insurance, a 401k retirement plan, disability and life insurance, and paid time off. We support a diverse and inclusive workforce and are an equal opportunity employer. We encourage you to apply, even if you don’t check all the boxes, and we will review your application. If you need a reasonable accommodation during the application or interview process, please let us know.

This position may have export control considerations. Applicants may be required to meet export control qualifications in order to access controlled information.

We request voluntary self-identification information for government reporting purposes. Providing this information is voluntary and will not affect your candidacy. Any information collected is confidential and used in accordance with applicable laws and regulations.