Mechanical Engineer - Winter 2026 Internship

Location: San Francisco Department: Internships Employment Type: FullTime Location Type: On-site

About the Role

Paid Winter 2026 Internship (Jan. - Apr., dates flexible). Candidates must work full-time, in-person at our San Francisco office located in the Mission.

What We're Building

We have been quietly building the foundational layers of our Physical AI Scientist platform:

🤖 Physical AI that can operate scientific instruments with human-level dexterity.

🧪 Scientific AI that can analyze results, reason about next steps, and close the loop autonomously.

This is an incredibly ambitious mission, but we believe that a team of ambitious people with high ownership can accomplish incredible things.

The Team

We’re a team of passionate, mission-driven engineers from companies like Tesla, Amazon, SpaceX, and Neuralink. We’re collaborative and love moving fast, both with our product and on team trips skiing or go-karting!

As a team, we love nerding out about engineering and robotics — plus other topics like race cars or cooking. We like learning new things and then sharing our new knowledge with each other.

Our team is opinionated and straightforward. We don’t mind intense discussions about design tradeoffs. If we have arguments or miscommunication, we resolve conflicts quickly and empathetically.

In this role, you will

Intern in our Mechanical Engineering team, focusing on building the tools used across our product to accelerate science

Let's talk if you have

Strong mechanical intuition and hardware debugging and assembly skills

Passion for the gritty details of part design, material selection, and manufacturing techniques

Experience with mechanical engineering tools and best practices in production to design components, produce drawings, and build assemblies

Experience designing, building, testing, and scaling hardware

A hacker’s mindset - getting quickly to a good-enough solution

Are hands-on and willing to cross discipline boundaries to solve a problem

Know your way around rapid prototyping technology

A willingness to wear many hats / a flexible attitude towards responsibilities and scope

Nice to have

Experience managing PLM/document control systems

Mechatronics and circuit design background

Knowledge of robotics, motion control, camera, force/torque sensors

Experience or familiarity with robot arm manipulators

Experience with robotics in a laboratory or manufacturing environment

Experience writing code for robotics systems

This position is 100% in-person, you must be able to come on-site to our San Francisco office.

Medra is an equal opportunity employer and prohibits discrimination and harassment of any type without regard to race, color, ancestry, national origin, religion or religious creed, mental or physical disability, medical condition, genetic information, sex (including pregnancy, childbirth, and related medical conditions), sexual orientation, gender identity, gender expression, age, marital status, military or veteran status, citizenship, or other characteristics protected by state, federal or local law or our other policies. We value diversity at Medra and welcome applications from those who are traditionally underrepresented in tech. If you like the sound of this position but are not sure if you are the perfect fit, please apply!