Harness Designer - Electrical San Jose, CA

Muon seeks a Harness Designer to join our electrical engineering team. The ideal candidate is self‑motivated and will help the entire Hardware Department. You will be working on the electrical team and will specify connectors, crimps, wire type and harness build instructions. This role will work in tandem with the mechanical harness counterpart who will specify routes, lengths, branch points and spacecraft integration instructions.

This designer should be flexible and incorporate feedback from the AIT team to help with improving designs for spacecraft integration or test.

The role will entail simultaneous work on multiple missions and projects, partnering with several engineers, designers, and technicians.

• Create harness drawings, BOMs and maintain system diagrams
• Specify connector and crimp part numbers in accordance with system design
• Gather feedback from AIT, EE and Mechanical for initial designs and improvements
• Work with electrical engineering to ensure compliance with signal integrity, grounding, and shielding requirements
• Release documentation into PLM with ECO/DCO
• Define electrical test criteria (e.g., continuity, insulation resistance, hipot) for flight and test harnesses. Support or oversee test execution and documentation
• Answer vendor questions on harness builds and feedback quality issues
• As required assist in house technicians with harness builds and questions

• Attention to detail, strong reading comprehension and a desire for ownership
• Familiarity with creating harness drawings in any software
• Familiarity with PLM systems (Duro preferred, or Arena or others acceptable)
• Ability to build harnesses from scratch - not required daily but helps inform strip lengths, crimper positioners and settings, splicing techniques, heat shrink selection, torque values etc.
• Excited to work in a fast‑paced environment with new challenges each week

• Experience designing harnesses with high reliability requirements
• Familiarity with NASA‑STD‑8739.4 and IPC‑A‑620
• Experience with RF cable build and characterization
• Basic scripting skills in Python, Bash, etc.
• History with using electrical test equipment, such as power supplies and electric loads
• Experience with harness test either at the vendor level or in house
• Certification in relevant build/rework standards
• Experience with low out gassing material selection
• The salary range for this role is $149,000 - $171,000, 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.

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 m climate monitoring to national security, Muon Space is dedicated to delivering Earth Intelligence for a safer and more resilient world.

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 & long term disability and life insurance. We also offer three weeks paid vacation for new employees, along with 12 paid holidays, unlimited sick time and paid parental leave.

We believe in equal employment opportunity regardless of race, color, ancestry, religion, sex, age, national origin, citizenship, sexual orientation, marital status, disability, or gender identity. We value diversity in the workplace, and that starts with our applicants. We encourage you to apply, even if you don't check all the boxes, and we look forward to reviewing your application! In addition, if you need a…