About the role

Muon seeks a Mechanical Engineer II to design and build hardware for our spacecraft platforms. Working alongside the group's senior and staff engineers, you'll take real ownership of components and assemblies: designing them, releasing them, prototyping them, and proving them out in test.

This is a hands-on design role with a fast build-test-learn loop. You'll see your hardware go from CAD to flight, and you'll help carry designs from first prototypes through constellation-quantity production.

This position is hybrid and requires working on-site in our San Jose, CA office three days per week.

What you'll do

• Own the design of components and assemblies within a spacecraft subsystem, from concept through CAD, flight build, and test,
• Develop and document design options and trades, with guidance from senior engineers on approach.
• Present your designs at reviews and participate as a peer reviewer.
• Drive integration and test of your hardware, and troubleshoot issues through root cause during build, qualification, and mission operations.
• Partner with the dedicated structural and thermal groups on detailed analysis, and coordinate across adjacent disciplines to keep the vehicle integrated.
• Mentor engineers, raise the team's technical bar, and influence design standards and best practices beyond your immediate scope.

Required qualifications

• 5+ years of experience designing, building, and testing high-reliability hardware
• B.S. or higher in Mechanical Engineering, Aerospace Engineering, or a related field
• Proficiency in CAD (SolidWorks preferred) for medium-to-large assembly design.
• Working proficiency with engineering drawings and GD&T; familiarity with BOMs, FAIs, and tolerance/mass budgets.
• Experience with ECO/DCO processes and PLM systems
• Experience contributing to the design of electromechanical systems
• Extensive documentation capabilities: build procedures, test plans, design trades, DOEs
• Excellent communication, presentation, and cross-functional coordination skills

Nice-to-have skills

• Deep design experience in one or more of: spacecraft structures and mission integration; deployables and solar arrays; or precision mechanisms.
• Experience owning a subsystem across its full lifecycle, including flight heritage or on-orbit hardware.
• Fluency with first-order structural/thermal analysis and hand-offs to dedicated analysis teams.]
• Experience managing external vendors for part prototyping and development
• Experience leading design reviews and defining design standards or processes.
• Hands-on background in integration, test, and anomaly resolution of flight hardware.
• Familiarity with solar array or electrical/power-system design (not required at this level).
• Experience mentoring or technically leading a small team of engineers.

Salary

The salary range for this role is $153,000 - $172,000, 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.