About the role#
As a Product Design Engineering intern, you will join our team to work on consumer hardware. You will spend your time using CAD design tools and working directly with lab equipment and hardware components. This role involves design, tooling, and testing tasks as we move products toward launch.
What you'll do#
- Collaborate with the cross-functional team on product design and validation.
- Build prototypes and run tests to help move designs toward mass production.
- Assist with 3D CAD design and 2D documentation.
- Partner with suppliers and contract manufacturers to troubleshoot and resolve manufacturing quality issues.
What you'll need#
- Current enrollment in or completion of a BS, MS, or PhD in Mechanical Engineering.
- Working knowledge of manufacturing processes and material selection for electro-mechanical systems.
- Proficiency in 3D CAD, preferably NX.
- Experience with various rapid prototyping methods.
- Strong communication and analytical skills.
- Experience with simulation tools like FEA or thermal analysis and statistical methods.
- Familiarity with design for manufacturing and assembly (DFM/DFA).
Location & details#
- Location: San Bruno, California.
- Work Modality: On-site.
- Term: Fall 2026.
- Compensation: $35 to $45 per hour.
- Status: Full-time, paid internship.
- Note: Applicants must be authorized to work for any employer in the U.S. We do not provide visa sponsorship.
About Mill
Mill operates in the environmental services sector. The company builds food recycling solutions to divert waste from landfills. It provides these tools to homes, workplaces, and cities. The business is based in San Bruno, California, and maintains a staff of 51 to 200 employees.
How to get in at Mill
Applying to Mill early gives you a distinct advantage because recruiters review applications before the pile grows. Intern Insider sends an instant alert the moment a role matching your target is published, so you can be among the first to submit your materials. This timing often determines whether your resume receives a full read. You can improve your response rate by reaching out to the recruiters behind these roles directly to ask about the position or a referral. Intern Insider surfaces the specific people managing the hiring process at Mill, which helps you move beyond the standard application queue. Connecting with a human contact is a practical way to show genuine interest in their food recycling mission.



