Advanced 3D Printing Mechanical Engineering Intern
San Francisco · Onsite · Internship

About Bracket Bot

We believe planet earth can thrive and be alive. Robots should manufacture goods, clean roadways, tidy our rooms, build more homes, cook healthy food, and lower the cost of living. We aren’t quite there yet, robots are too expensive, too difficult to program, fragile, and unfriendly. Bracket Bot is changing that.

We believe that robots are currently in the ENIAC era and we are bringing them to the Macbook era. We believe in high performance engineering teams where everyone you work with is what you imagined Bell Labs employees to be like. Intelligent, scrappy, dedicated, kind.

At Bracket Bot, we have a few objectives. We are working to make the ideal role model of a company, one where everyone is at the top of their field, inventing new ways to solve the problems we face across mechanical, electrical, software, and machine learning. What does a company that creates entirely new ways that teams work together look like? A company that invents new materials for lighter weight actuators and structures? A company that creates and publishes new inverse kinematics algorithms for robots? A company that is thinking radically differently, and executing on another level.

In every field there are small teams who did something their peers had decided was impossible. The 10-second barrier in sprinting, or the eight engineers who left Motorola and made the 6502 for 10x lower cost than other chips at the time making the personal computer possible. SpaceX has landed the same rocket 36 times. Bracket Bot believes actuated, alive machines can be glorious, affordable, easy to use, and ubiquitous, and we are pulling that future forward.

Our products are a mirror of what we think about the world, on engineering & research, and what we think should be introduced into the world. In history, there are simply products that should exist, and only once created, are obvious in hindsight. Bracket Bot’s mission is to introduce as many of these products into the world as possible. We believe there are hundreds of these in the space of robotics. Across physical robot hardware, software and operating system; the infrastructure and distributed systems they connect to; the AI inference they run, both local and cloud, and so much more.

Our first product, Bracket Bot 1, exemplifies what a small team of highly talented people can do. At Bracket Bot, we genuinely believe 100x engineers exist, and a room full of them can create things that dozens of other companies have failed to do. We’ve brought to market a robot that is 10x lower cost than any other robot in its category, while out performing them on manipulation, autonomous navigation, speech interaction, and developer UX.

We’re backed by Fifty Years (Scott Phoenix), BoxGroup, SV Angel, Betaworks, Pace Capital, angels including Nat Friedman, Logan Kilpatrick (Google AI), Guillermo Rauch (Vercel) and others from Tesla AI, Physical Intelligence, and Markforged.

About the role

Additive manufacturing lets us move quickly from a mechanical idea to a part we can assemble, test, and improve.

We’re hiring an Advanced 3D Printing Mechanical Engineering Intern to help develop printed robot parts and the processes used to make them. You’ll work across CAD, print preparation, materials, tolerances, testing, and mechanical iteration.

This is a hands-on role for someone who enjoys understanding why a print or mechanism failed and making the next version better.

What you’ll do

• Design and iterate mechanical parts for additive manufacturing.

• Prepare prints and evaluate orientation, supports, fit, strength, and material choices.

• Operate and maintain 3D printers and troubleshoot print failures.

• Measure parts, check tolerances, assemble prototypes, and test mechanical behavior.

• Compare print settings and designs using practical experiments.

• Document results and help make successful parts and print processes repeatable.

What we’re looking for

• Hands-on 3D printing experience and examples of mechanical parts you’ve made.

• CAD skills and an interest in mechanisms, materials, and manufacturing.

• Ability to troubleshoot print failures and reason about fit, strength, and tolerances.

• Patience with measurement and iteration, alongside a drive to build quickly.

• Clear communication and careful documentation of results.

Nice to have

• Experience with functional robot parts, assemblies, or fixtures.

• Experience testing different materials or improving print reliability.

• Experience maintaining printers or managing multiple prints and revisions.

Important notes

• This is a hands-on internship based onsite in San Francisco.

• The work combines mechanical engineering with practical additive manufacturing.

• We value useful parts, thoughtful experiments, and evidence of your own builds.

Bracket Bot is an equal opportunity employer. We’re building a diverse team and welcome applicants from all backgrounds.