Senior to Staff Mechanical Engineer at 1X — San Carlos, CA

# About 1X

We’re building humanoid robots that work in home - doing the chores, handling the tasks, and giving people their time back. Simple, but it’s not.

To do this right, we have to solve robotics, AI, manufacturing - at the same time, at scale, in a form factor that has to be safe enough to live with your family. If you’re inspired by this, you’ll thrive here. We’ve been at this since 2014 and we’re at the point where the hard problems are behind us and the hard work is in front of us.

# About the Team

The Hardware Engineering team designs and delivers the electromechanical systems that allow NEO to move, manipulate, and interact safely with the world. From structural components and precision mechanisms to complete robotic subsystems, the team owns hardware development from concept through production.

Working closely with electrical, controls, firmware, manufacturing, and robotics engineers, you'll help transform ambitious ideas into robust, manufacturable products that operate reliably in real-world environments.

# Your Charter

Design and deliver the mechanical systems that power humanoid motion.

You will own mechanical subsystems from concept through production, developing high-performance electromechanical hardware that balances strength, weight, durability, manufacturability, and cost. Through rapid prototyping, rigorous testing, and close cross-functional collaboration, you'll help build robots capable of operating reliably in homes around the world.

# Key Outcomes

• Design and release mechanical components and electromechanical subsystems that meet performance, reliability, and manufacturability requirements
• Deliver lightweight, high-strength designs through structural analysis, FEA, and rapid design iteration
• Integrate motors, sensors, PCBAs, cabling, bearings, and power transmission systems into robust robotic assemblies
• Improve product quality through Design for Manufacturability (DFM), Design for Assembly (DFA), serviceability, and cost optimization
• Drive hardware from concept through prototype validation, design refinement, and successful production release

# Key Competencies

• Strong mechanical engineering fundamentals with exceptional structural and mechanism design capability
• Hands-on builder who enjoys designing, prototyping, testing, and refining hardware
• Strong analytical skills with the ability to balance engineering trade-offs across performance, reliability, weight, and manufacturability
• Excellent collaboration across electrical, firmware, controls, manufacturing, and robotics disciplines
• Ownership mindset with the ability to independently drive complex hardware development efforts

# Minimum Requirements

• Bachelor's or Master's degree in Mechanical Engineering or a related engineering discipline
• 5+ years of experience designing mechanical systems or electromechanical products
• Strong proficiency with professional 3D CAD software
• Excellent understanding of structural mechanics, machine design, and mechanical engineering fundamentals
• Experience performing structural FEA and engineering validation to support design decisions
• Hands-on prototyping and laboratory experience
• Experience with GD&T, tolerance analysis, and production-ready engineering documentation
• Successfully shipped at least one production hardware product
• Extensive experience selecting and integrating bearings into precision mechanical systems

# Preferred Skills

• Experience developing robotic or consumer electronics hardware at production scale
• Experience with ANSYS or equivalent structural simulation tools
• Knowledge of injection molding, die casting, machining, and other high-volume manufacturing processes
• Experience designing power transmission systems, robotic joints, or actuator assemblies
• Familiarity with reliability testing, failure analysis, and design optimization for production hardware

# What does a successful 1X Team Member look like?

Successful Mechanical Engineers at 1X combine deep technical expertise with a bias toward execution. They enjoy solving difficult multidisciplinary problems, rapidly iterating on hardware, and taking full ownership from initial concepts through production. They understand that exceptional robots are built through rigorous engineering, constant experimentation, and relentless attention to detail.

# Compensation Range

$175,950 - $253,000 + Equity

# Benefits

• Comprehensive medical, dental, and vision coverage
• Generous paid time off, company holidays, and parental leave
• 401(k) plan with company match (100% on the first 3% of contributions, 50% on the next 2%)
• Flexible Spending Accounts (FSA) and Health Savings Accounts (HSA) options
• Commuter benefits (transit and parking)
• Short-term and long-term disability, and life insurance
• Employee Assistance Program (EAP) for mental health, financial, and personal support
• Onsite snacks and catered lunches

# Equal Opportunity Employer