Mechanical Engineering Internship, Prototyping

Since its founding in 2015, 1X has been at the forefront of developing advanced humanoid robots designed for household use. Our mission is to create an abundant supply of labor via safe, intelligent humanoids. 

We strive for excellence in all we do, solving some of the hardest problems in robotics with the world’s most talented individuals. Every part of our robots is designed and produced in-house—from motor coils to AI—reflecting our vertically integrated approach. At 1X, you’ll own real projects, be recognized for your achievements, and rewarded based on merit.

We believe the best work is done when collaborating and therefore require in-person presence in our office locations. 

As we scale from research and development to full-scale manufacturing, we are looking for a Mechanical Engineering Intern, Prototyping.

This role will support hardware development for September - December 2025. You’ll be part of the Prototyping team, responsible for development, assembly, and testing parts used in our humanoid robots. This is a hands-on, in-person role based in Palo Alto. For the right candidate, this internship may lead to a full-time offer.

RESPONSIBILITIES

• Mechanical-engineering focus

  • 3D-print and assemble prototypes

  • Create models in multiple materials

  • Conduct durability testing

• Shared (mechanical engineering interns & electrical engineering interns)

  • Collaborate with engineering and design teams to integrate new parts and resolve fit-and-function issues

  • Contribute to the design and engineering of the next robot revision - your work is production-critical, not a side project

  • Create and edit CAD models for printing or milling

  • Document print settings, results, and workflows

  • Maintain print lab organization and inventory

• Hands-on experience in mechanical engineering

• Basic CAD skills (SolidWorks, Onshape, etc.)

• Comfortable doing physical work,, setup, assembly, post-processing

• Able to work on-site in Palo Alto

• Currently studying engineering or a related field.

Nice to have

• Worked on robotics, mechatronics, or general hardware projects

If you know how to build and can figure things out quickly, that matters more to us than checking every box.

WHO THRIVES ON THE PROTOTYPING TEAM

The prototyping team moves fast, builds constantly, and figures things out without a playbook. People who do well here usually show these traits:

• Own It – You take responsibility. If it’s broken or missing, fix it.

• Move Fast – You make smart calls and iterate quickly instead of overanalyzing.

• Be Resourceful – You figure things out when tools, time, or info are limited.

• Learn & Improve – You absorb feedback, learn fast, and get better every week.

• Build trust – You do what you say, communicate clearly, and follow through

Location Policy
We believe the best work is done when collaborating and therefore require in-person presence in our office locations.

We're excited to get to know you and the prospects of having you on board!