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Prototype Engineer Intern Jobs in Fairfield, CA (NOW HIRING)

Droyd Robotics

Mechanical Engineer Intern

San Francisco, CA · On-site

$22 - $29.75/hr

About the Role As a Mechanical Engineering Intern at Droyd, you will work hands-on on real robotic ... You will be expected to prototype, test, and refine designs alongside full-time engineers. This ...

Droyd Robotics

Mechanical Engineer Intern

San Francisco, CA · On-site

$22 - $29.75/hr

About the Role As a Mechanical Engineering Intern at Droyd, you will work hands-on on real robotic ... You will be expected to prototype, test, and refine designs alongside full-time engineers. This ...

Droyd Robotics

Mechanical Engineer Intern

San Francisco, CA · On-site

$22 - $29.75/hr

About the Role As a Mechanical Engineering Intern at Droyd, you will work hands-on on real robotic ... You will be expected to prototype, test, and refine designs alongside full-time engineers. This ...

Pylon Labs

Software Engineer, Intern

San Francisco, CA · On-site

Build prototypes, work independently, iterate quickly, and ship fast * Have high autonomy, own things end to end, and project manage your own work * Work with PMs, designers, and other engineers in a ...

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All JobsPrototype Engineer Intern JobsPrototype Engineer Intern Jobs in Fairfield, CA

Prototype Engineer Intern information

See Fairfield, CA salary details

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How much do prototype engineer intern jobs pay per hour?

As of Aug 31, 2026, the average hourly pay for prototype engineer intern in Fairfield, CA is $17.34, according to ZipRecruiter salary data. Most workers in this role earn between $14.66 and $19.57 per hour, depending on experience, location, and employer.

What does a prototype engineer intern do?

A Prototype Engineer Intern assists in designing, building, and testing early versions of products or components. They work closely with engineering teams to turn concepts into physical models, often using tools like 3D printers, CNC machines, and hand tools. Their role may involve troubleshooting, documenting results, and suggesting improvements based on testing. This internship provides hands-on experience in the product development process and helps interns develop practical engineering skills.

What types of projects and responsibilities can a prototype engineer intern expect during their internship?

As a Prototype Engineer Intern, you can expect to work on hands-on projects that may include designing, building, and testing prototypes for new products or features. You'll likely collaborate closely with engineers, designers, and sometimes manufacturing teams to bring concepts to life quickly. Typical responsibilities include CAD modeling, assembling physical prototypes, running experiments, and documenting results. This role often requires adaptability and problem-solving, as you'll need to iterate designs based on feedback and test outcomes. It's a great opportunity to gain experience with rapid prototyping tools and processes while working in a collaborative, innovative environment.

What are the key skills and qualifications needed to thrive as a prototype engineer intern, and why are they important?

To thrive as a Prototype Engineer Intern, you need a solid background in engineering fundamentals, hands-on fabrication skills, and experience with prototyping processes, typically supported by coursework in mechanical or electrical engineering. Familiarity with CAD software (such as SolidWorks or AutoCAD), 3D printing technology, and basic laboratory or workshop tools is often required. Strong problem-solving abilities, attention to detail, and effective communication help interns excel in collaborative and fast-paced development environments. These skills are crucial for efficiently transforming design concepts into functional prototypes that support innovation and product development.

What is the difference between Prototype Engineer Intern vs Mechanical Engineering Intern?

AspectPrototype Engineer InternMechanical Engineering Intern
Required CredentialsEnrolled in Mechanical, Electrical, or related engineering programsEnrolled in Mechanical Engineering or related programs
Work EnvironmentHands-on prototyping, product development labs, manufacturing settingsDesign, analysis, testing in labs or office settings
Industry UsageProduct design, hardware development, R&D teamsDesign, analysis, manufacturing, and testing teams

Prototype Engineer Interns focus on creating and testing physical prototypes, often working closely with hardware and manufacturing teams. Mechanical Engineering Interns typically engage in design, analysis, and testing of mechanical systems. While both roles require engineering knowledge and may overlap in industry settings, Prototype Engineer Interns are more hands-on with prototyping processes, whereas Mechanical Engineering Interns may have broader design responsibilities.

What are popular job titles related to Prototype Engineer Intern jobs in Fairfield, CA?

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What job categories do people searching Prototype Engineer Intern jobs in Fairfield, CA look for?

The top searched job categories for Prototype Engineer Intern jobs in Fairfield, CA are:

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Cities near Fairfield, CA with the most Prototype Engineer Intern job openings:

Prototype Engineer Intern jobs near you

Mechanical Engineer Intern

Droyd Robotics

San Francisco, CA • On-site

$22 - $29.75/hr

Full-time

Re-posted 10 days ago

Job description

Thought process
Thought process
About the Team
Droyd builds autonomous robotic systems that automate repetitive manual work in real environments. We design and manufacture our hardware in-house, which means iteration, fabrication, and execution all happen under one roof.
Our robots operate in production settings, which means mechanical design must be practical, manufacturable, and tightly integrated with electronics and actuation. Our mechanical team designs and builds the physical systems that make our robots work - this team spends as much time prototyping and testing as it does designing.
About the Role
As a Mechanical Engineering Intern at Droyd, you will work hands-on on real robotic hardware. You will help design, build, and iterate on mechanical subsystems that ship to production robots.
This is not a CAD-only role. You will be expected to prototype, test, and refine designs alongside full-time engineers.
This role is based on-site in San Francisco, CA.
In This Role, You'll
Design & Analysis
  • Support mechanical subsystem design from concept through prototype and iteration
  • Create and modify CAD models for parts and assemblies
  • Help perform basic load calculations, testing, and analysis
  • Design parts for rapid prototyping methods such as 3D printing and CNC machining

Prototyping & Build
  • Build and assemble prototypes using 3D printers, hand tools, and shop equipment
  • Help integrate mechanical designs with motors, sensors, and basic mechatronic components
  • Iterate quickly based on test results and engineering feedback

Documentation & Collaboration
  • Document designs, tests, and learnings
  • Work alongside full-time engineers across mechanical, electrical, and software
  • Communicate progress, blockers, and findings clearly

Work Environment & Schedule
  • On-site in San Francisco, CA
  • Part-time or full-time internship, balanced with school commitments

We're Looking For Candidates Who
  • Are current juniors or seniors (or equivalent) studying mechanical engineering or a related field
  • Have hands-on experience from clubs, personal projects, or coursework involving physical hardware
  • Can show examples of projects taken from concept to a physical build
  • Are comfortable using modern CAD tools (Onshape preferred, but not required)
  • Are willing to balance school and work in a fast-paced, build-heavy environment
  • Take ownership, learn quickly, and enjoy working with real hardware

Nice to have:
  • Experience with FEA, topology optimization, or generative design
  • Exposure to machining, tolerancing, or manufacturing workflows
  • Familiarity with electronics, motors, or control systems
  • Interest in industrial or visual design

About Droyd
Droyd builds autonomous robotic systems that operate in real production environments. We design the hardware, develop the control stack, and generate the data that enables generalist robotics.
If we do this right, robots stop being demos and start being infrastructure.
Join us and help build the systems that make it real.

Apply