Senior Actuator Engineer — Space & Defense (On-site)

ESI Motion; Simi Valley (CA); On-site; USD 140,000 - 160,000; Full time

Benefits offered by this job

401(k)

401(k) matching

Flexible spending account

Health insurance

Health savings account

Life insurance

Vision insurance

Job summary

ESI Motion in Simi Valley, CA is seeking a Senior Mechanical Engineer (Actuators) to own the mechanical design of electromechanical actuators from concept through qualification and production. This is a hands-on senior IC role with CAD, analysis, bench work, and mentoring responsibilities. You'll report to the Director of Engineering and collaborate with electrical, controls, test, manufacturing, and supply chain teams.

Qualifications

• BS in Mechanical Engineering or closely related field.
• 7+ years of mechanical product development in aerospace/defense/high-reliability industries.
• Direct design responsibility for released actuators or similar motion-control hardware.
• Advanced SolidWorks skills with complex assemblies.

Responsibilities

• Lead mechanical architecture and detailed design of rotary and linear actuators, including housings, geartrains, bearings, shafts, brakes, seals, and interfaces.
• Translate customer and system requirements into actuator-level requirements and verification plans.
• Run sizing and trade studies for torque, speed, stiffness, backlash, efficiency, life, mass, and thermal limits.
• Select bearings, gears, lubricants, materials, coatings, and seals for vacuum and extreme environments.
• Perform structural, thermal, fatigue, and bearing-life analyses and correlate with test results.
• Release drawings, BOMs, and specifications using GD&T per ASME Y14.5 with tolerance stack-ups.
• Plan and support development, acceptance, and qualification testing including thermal-vacuum and vibration; lead root-cause investigations.
• Collaborate with suppliers and manufacturing to move designs to production.
• Lead design reviews and mentor junior engineers and designers.

Skills

SolidWorks

GD&T

FEA

Prototype build

Thermal analysis

Structural analysis

Education

BS in Mechanical Engineering

Tools

ASME Y14.5

FEA software

Prototype development tools

Job description

ESI Motion in Simi Valley, CA is seeking a Senior Mechanical Engineer (Actuators) to own the mechanical design of electromechanical actuators from concept through qualification and production. This is a hands-on senior IC role with CAD, analysis, bench work, and mentoring responsibilities. You'll report to the Director of Engineering and collaborate with electrical, controls, test, manufacturing, and supply chain teams.