Lead Mechanical Engineer, Actuator & Motion Systems

raydar; Fremont (CA); On-site; USD 180,000 - 280,000; Full time

Job summary

Raydar is seeking a Mechanical Engineer to lead the mechanical architecture of compact actuators for high‑performance robotics in Fremont, CA. You will translate load, duty-cycle and thermal requirements into tangible, buildable designs.

You will balance output force, weight, energy use and heat with hands-on prototyping, testing and on-site collaboration with motor, controls and test engineers. Expect ownership from CAD reviews to production release.

Qualifications

• Experience in in-house mechanical design.
• Track record of taking a motion component from design into shipped equipment.
• Prior work on dense, high-output motion hardware with active cooling.
• Strong depth in mechanical or mechatronic design.
• Solid grasp of how electric machines, gearing, heat, sensing and power electronics constrain one another.
• Practical record of building test units, verifying them, working with vendors and handing designs off to manufacturing.

Responsibilities

• Turn robot load and duty-cycle requirements into specific actuator targets for torque, speed, stiffness, life, packaging and temperature.
• Weigh motor layout, gearing, bearings, cooling, sensing and drive limits, using test data to settle competing requirements.
• Set the boundaries between mechanical hardware, power electronics and embedded code, covering electrical ceilings, sensor locations and how the unit responds to faults.
• Build prototypes and debug hardware on the bench, owning CAD and analysis reviews and key technical decisions.
• Plan characterization work with motor, controls and test engineers, and match measured results against models.
• Lead design reviews, supplier choices and manufacturability work through to production release.

Skills

In-house design

Motion component design

High‑output motion hardware

Mechatronic design

Electrical-mechanical co-design

Prototype testing

Job description

Raydar is seeking a Mechanical Engineer to lead the mechanical architecture of compact actuators for high‑performance robotics in Fremont, CA. You will translate load, duty-cycle and thermal requirements into tangible, buildable designs.

You will balance output force, weight, energy use and heat with hands-on prototyping, testing and on-site collaboration with motor, controls and test engineers. Expect ownership from CAD reviews to production release.