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About the role Muon seeks a Senior Software Engineer to join our Hardware Reliability & Test organization as the technical lead for our hardware test frameworks — the software, standards, results databases, and tooling used to test Muon hardware from module level through fully assembled spacecraft.  The ideal candidate is a hands-on engineer who bridges hardware and software: equally comfortable architecting clean Python frameworks and debugging test instruments at the bench. This position is hybrid and requires working on-site in our San Jose, CA office three days per week. Responsibilities Serve as the technical lead for Muon's hardware test frameworks: own architecture, standards, and the technical roadmap Design and build Python-based test frameworks and tooling used from module-level through fully assembled spacecraft testing Write drivers and abstractions for test instruments and ground support equipment (power supplies, DAQs, oscilloscopes, environmental chambers, RF test equipment) Architect test results databases and user interfaces, selecting the right technologies for Muon's scale Build standard, shared spacecraft-level tests that can be tailored per mission Partner with subsystem, bus, and test teams to drive framework adoption, supporting and training users Integrate test frameworks with CI/CD and hardware-in-the-loop infrastructure for automated regression testing Mentor engineers and set the bar for code quality across hardware test software Qualifications Experience developing software that controls and tests physical hardware, including writing drivers for test instruments (e.g., VISA/SCPI, serial, CAN, or Ethernet-based) B.S. in Computer Science, Electrical/Computer Engineering, or a related technical field 8+ years of software engineering experience, with demonstrated technical leadership of complex, multi-engineer projects Expert-level Python, including designing frameworks or libraries adopted by other engineering teams Working knowledge of electronics and lab test equipment; comfortable debugging at the bench Experience with databases and building tooling and user interfaces Excellent communication and presentation skills Excited to work in a fast-paced environment with new challenges each week Nice-to-have Skills Experience testing spacecraft, launch vehicles, or other aerospace hardware Experience with reading & modifying embedded C/C++ applications Experience with hardware-in-the-loop simulation or production/acceptance test systems Familiarity with pytest or similar frameworks as a foundation for hardware test Experience with results/time-series databases and dashboarding tools (e.g., SQL, InfluxDB, Grafana) Salary The salary range for this role is $ 184,000 - $208,000 , plus a competitive equity grant and comprehensive benefits package. Final compensation will be determined based on skills, qualifications, experience, and geographic location as assessed during the interview process.  About Muon Space 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 revolutionary, integrated technology stack enables customers to optimize every dimension of their missions for faster time-to-orbit and superior constellation remote sensing performance. Our state-of-the-art facility in the heart of Silicon Valley is optimized for manufacturing spacecraft and rapid, flexible payload integration at scale. From climate monitoring to national security, Muon Space is dedicated to delivering Earth Intelligence for a safer and more resilient world. Taking Care of Our Team At Muon salary is only part of our total compensation package. In addition to salary, full-time employees receive equity compensation as well as benefits including medical, dental, and vision insurance, a 401k retirement plan, short