Senior Mechanical Engineer

About 1X
 We’re an AI and robotics company based in Palo Alto, California, on a mission to build a truly abundant society through general-purpose robots capable of performing any kind of work autonomously.
 We believe that to truly understand the world and grow in intelligence, humanoid robots must live and learn alongside us. That’s why we’re focused on developing friendly home robots designed to integrate seamlessly into everyday life.
 We’re looking for curious, driven, and passionate people who want to help shape the future of robotics and AI. If this mission excites you, we’d be thrilled to hear from you and explore how you might contribute to our journey.

Role Overview
We are seeking a Mechanical Design Engineer to lead the design and development of critical systems for our humanoid robot, NEO. In this role, you’ll design and validate high-performance robotic joints, transmissions, and sensor-integrated assemblies, ensuring that they are optimized for both performance and manufacturability. Your work will directly impact the scalability of humanoid robots from R&D into full-scale production and deployment across homes and industries worldwide.

Responsibilities

• Design, prototype, and validate electromechanical systems for humanoid robots

• Integrate electronics, sensors, and cabling into compact, multi-DoF joint packages

• Optimize assemblies for weight, reliability, manufacturability, and cost efficiency

• Perform structural FEA simulations to validate robust designs

• Produce high-quality CAD models, drawings, and specifications for manufacturing partners

• Author design documentation including requirements, specifications, and test plans

Requirements

• Bachelor’s or higher degree in Mechanical or Aerospace Engineering

• Proficiency with CAD tools (SolidWorks preferred)

• Experience performing structural FEA simulations

• Strong understanding of manufacturing methods for mid- to high-volume production

• Proven experience taking complex mechanical systems from concept through production

• Bonus: Experience with DFM for casting or forging processes

• Bonus: Background in robotics system design, kinematics, or dynamics

• Bonus: Familiarity with FMEA for design validation

• Bonus: Experience developing multi-DoF mechatronic systems

• Bonus: Exposure to PCB design workflows

Benefits & Compensation

• Health, dental, and vision insurance

• 401(k) with company match

• Paid time off and holidays

Equal Opportunity Employer
1X is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, gender, gender identity or expression, sexual orientation, national origin, ancestry, citizenship, age, marital status, medical condition, genetic information, disability, military or veteran status, or any other characteristic protected under applicable federal, state, or local law.