Mechanical Design Engineer

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📍 San FranciscoFullTime

About this role

We're looking for an experienced mechanical engineer to drive the integration and development of our robotic systems, leading innovative designs from concept to deployment. You'll own the full spectrum of mechanical development—from actuator sizing or design to kinematics and work with teams to prototype and ultimately produce systems at scale—ensuring reliability, deployability, and performance. The ideal candidate is a hands-on innovator with deep expertise in mechatronic systems, combining theoretical knowledge with practical engineering skills. Experience with actuation systems, electromechanical integration, machine design, and a track record of bringing mechanical systems to life is essential. If this sounds like you, please apply!


In This Role You Will

- Own the mechanical design lifecycle: Drive all design decisions around 3D CAD, 2D drawings, material selection, and manufacturability — from early concept and proof-of-concept prototypes through high-volume production.

- Develop and refine manufacturing processes: Identify and optimize injection molding, die casting, stamping, machining, adhesives, and bonding methods for new and existing products.

- Ensure reliability and robustness: Perform and interpret reliability tests (HALT/HASS, tolerance stack-ups, environmental testing) and lead corrective design actions.

- Leverage simulation for smart decisions: Use basic FEA tools (thermal, structural, vibrational) and first-order analyses to validate or guide design from early phases onward.

- Lead system integration efforts: Collaborate with electrical and radio teams to balance thermal, EMI, mechanical stability, and accessibility needs in tightly integrated assemblies.

- Prototype and iterate quickly: Build proof-of-concept designs, run experiments, and translate findings into high-yield, mass-production-ready solutions.

- Manage vendor relationships: Evaluate DFM, cost, yield, and timeline trade-offs; work with JDM/CM/ODM partners; own and drive supplier selection where needed.

- Communicate effectively across teams: Conduct design reviews with cross-functional stakeholders, clearly articulating design rationale, risks, and trade-offs.

What We Hope You'll Bring

- 7+ years of experience taking hardware products from concept to production, with a strong portfolio of shipped mechanical designs — preferably in robotics, automotive, or consumer products

- Bachelor's Degree in Mechanical or Aerospace Engineering, or equivalent experience

- Deep understanding of high-volume manufacturing processes (injection molding, die casting, stamping, machining, bonding)

- Familiarity with HALT/HASS, FMEA, DOE methodologies, and test-to-failure approaches for robust mechanical design

- Practical understanding of when and how to apply FEA tools, with the ability to make first-order engineering judgments

- Proven record of mechanically integrating electronics (sensors, PCBs, antennas, batteries) in complex assemblies

- Ability to lead reviews, influence cross-functional teams, and convey risks and solutions clearly

- Comfort in early-stage, resource-limited startup environments with a willingness to move quickly and hands-on

- Proficiency in prototyping methods including machining (mill, lathe), sheet metal fabrication, 3D printing, and injection molding

- Experience building and testing prototypes and analyzing failures to implement improvements

Pursuant to the San Francisco Fair Chance Ordinance, we will consider for employment qualified applicants with arrest and conviction records.

Frequently Asked Questions

Is the salary disclosed for the Mechanical Design Engineer position at physicalintelligence?
The salary for this Mechanical Design Engineer role at physicalintelligence is not publicly listed. Click "Apply Now" to learn more about the compensation package on their official careers page.
Where is the Mechanical Design Engineer position at physicalintelligence located?
This Mechanical Design Engineer role at physicalintelligence is based in San Francisco. The position is listed as on-site or hybrid. Check the full job description or apply directly to confirm the work arrangement.
Is the Mechanical Design Engineer role at physicalintelligence full-time or part-time?
This is listed as a FullTime position. It is posted as a Mechanical Design Engineer role in the Hardware department at physicalintelligence.
Which team or department does the Mechanical Design Engineer at physicalintelligence belong to?
This Mechanical Design Engineer position is part of the Hardware department at physicalintelligence. See the full job description for more information about the team structure and responsibilities.
How do I apply for the Mechanical Design Engineer position at physicalintelligence?
Click the "Apply Now" button on this page. You will be redirected to physicalintelligence's official application portal hosted on ashby where you can submit your application directly.
When was the Mechanical Design Engineer job at physicalintelligence posted?
This Mechanical Design Engineer position at physicalintelligence was posted on Jun 14, 2025. Apply as soon as possible — early applications are often reviewed first.
Mechanical Design Engineer
physicalintelligence
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