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Clera

Principal Mechanical Engineer

San Francisco, California, United States

Location
San Francisco, California, United States
Work
On-site
Employment
Full-time
Level
Lead / staff
Function
Engineering
Pay
$235K – $305K a year (read from the ad)
Posted
4 days ago

Pay and the market here

The top of this role’s range, $305K a year, is 4% above the median of $292K for lead / staff engineering jobs in San Francisco (middle half $250K – $350K, 932 jobs that state pay).

5,112 engineering jobs open in San Francisco: 9% remote, 996 posted in the last 30 days.

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About the role

About the Role

Join a small defense technology team developing autonomous directed-energy systems for counter-drone applications. As Principal Mechanical Engineer, you will own system-wide mechanical architecture and help take complex hardware from prototype through production and field deployment.

What You'll Do

  • Lead mechanical architecture and integration across electrical, power, embedded, and optics subsystems.
  • Make technical decisions on challenging hardware problems from concept through production readiness.
  • Guide hardware release and production processes in partnership with manufacturing teams.
  • Review designs, calculations, and test results to identify risks early and maintain high engineering standards.
  • Personally execute mechanical design work when your experience can resolve a problem quickly.
  • Balance cost, mass, reliability, schedule, and field performance in design and manufacturing decisions.
  • Mentor engineers through hands-on technical leadership and design reviews.

What We're Looking For

  • 10 or more years designing and shipping complex hardware systems, including multiple transitions from prototype through manufacturing and deployment.
  • Mechanical engineering is your primary discipline, with recent hands-on experience in CAD, structures, mechanisms, and packaging.
  • Deep mechanical expertise and sound judgment in at least one additional area, such as electrical engineering, power electronics, or embedded systems.
  • Experience leading full-system hardware integration and designing equipment for demanding real-world environments.
  • Ability to correlate FEA or hand calculations with bench or field test data.
  • Background as a senior individual contributor or technical lead at a hardware organization that shipped products.
  • Experience in defense hardware, aerospace, robotics, high-performance automotive, maritime, or a related field is valuable. Directed energy, laser or high-power systems, thermal management, ruggedized equipment, and manufacturing scale-up experience are also relevant.

Compensation & Benefits

Base salary: $235,000 to $305,000 annually. Visa sponsorship is not available.

Location

On-site in San Francisco, California, United States.

Source

Posted by Clera on their own hiring page, jobs.ashbyhq.com. OptiTalent shows it as published, read 09 Nov 2026 15:12 UTC; the original is the reference.

View the original ad ↗

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