1

Prototype Tester Jobs in California (NOW HIRING)

Sr. Prototype Engineer

San Diego, CA · On-site

$75K - $90K/yr

Role Overview: We're seeking a hands-on Sr. Prototype Engineer to support the development, testing, and validation of next-generation transcranial magnetic stimulation (TMS) devices. You'll work ...

Prototype Assembler

San Jose, CA · On-site

$27 - $30/hr

M-F; 7am-3:30pm Pay range: $27-$30/hour on W2 The Prototype Assembler will be responsible for assembling, testing and repairing memory test equipment/fixture/tester. Requirements: 2+ years ...

Prototype Assembler

San Jose, CA · On-site

$27 - $30/hr

M-F; 7am-3:30pm Pay range: $27-$30/hour on W2 The Prototype Assembler will be responsible for assembling, testing and repairing memory test equipment/fixture/tester. Requirements: 2+ years ...

Be Seen First

Perform functional testing, diagnostics, and troubleshooting throughout the build process ... Support engineering validation, prototype development, and continuous improvement initiatives.

Prototype Build Technician Position Description : Protingent Staffing has an exciting direct hire ... Regularly work at customer or field sites to support integration and testing Job Qualifications:

Prototype Shop Manager

Torrance, CA · On-site

$120K - $180K/yr

What you will be doing As the Prototype Shop Manager for Neros, you will own the day-to-day ... Experience commissioning equipment (layout, utilities, acceptance testing, training plans)

next page

Showing results 1-20

Prototype Tester information

What are some common challenges prototype testers face when evaluating new products, and how can they overcome them?

Prototype Testers often encounter challenges such as incomplete documentation, rapidly evolving product designs, or limited testing resources. Navigating these issues requires strong problem-solving skills, adaptability, and clear communication with design and engineering teams. Collaborating closely with developers and providing detailed, constructive feedback helps ensure that potential issues are identified and addressed early in the process. Additionally, staying organized and maintaining thorough testing records can help manage changes and provide valuable insights for future iterations.

What is the difference between Prototype Tester vs Product Tester?

AspectPrototype TesterProduct Tester
Required CredentialsBasic technical skills, sometimes a background in engineering or designMinimal; often no formal credentials needed
Work EnvironmentDesign labs, manufacturing facilities, or client sitesHome, retail stores, or online testing environments
Industry UsageProduct development, engineering, manufacturingConsumer goods, electronics, food products
Common Search IntentTesting prototypes for functionality and usabilityEvaluating finished products for quality and satisfaction

Prototype Testers focus on evaluating early-stage models to identify design flaws, while Product Testers assess finished products for quality and user experience. Both roles involve testing but differ in scope, environment, and credentials required.

What are the key skills and qualifications needed to thrive as a prototype tester?

To thrive as a Prototype Tester, you need a solid understanding of product development processes, attention to detail, and problem-solving abilities, often supported by a background in engineering, design, or quality assurance. Familiarity with testing tools, data collection systems, and relevant documentation software is typically required. Strong communication, critical thinking, and adaptability help Prototype Testers collaborate with cross-functional teams and provide clear feedback. These skills ensure accurate evaluation of prototypes, supporting product improvement and successful launches.

How do I become a prototype tester?

To become a prototype tester, you typically need to have good attention to detail, basic technical skills, and the ability to follow instructions. Many companies look for testers with experience in product design, engineering, or user experience, and some may require familiarity with specific tools or software. Applying through online platforms, freelance sites, or directly to companies that develop new products can help you find testing opportunities.

What is a prototype tester?

Prototype testers are professionals who evaluate early versions of products, known as prototypes, to identify issues, gather user feedback, and ensure the product meets design and functionality expectations. They play a crucial role in the development process by testing usability, durability, and performance, and providing recommendations for improvements. Their feedback helps companies refine products before mass production or public release, reducing the risk of costly errors and enhancing customer satisfaction.
What are popular job titles related to Prototype Tester jobs in California? For Prototype Tester jobs in California, the most frequently searched job titles are:
What job categories do people searching Prototype Tester jobs in California look for? The top searched job categories for Prototype Tester jobs in California are:
What cities in California are hiring for Prototype Tester jobs? Cities in California with the most Prototype Tester job openings:
Infographic showing various Prototype Tester job openings in California as of August 2026, with employment types broken down into 83% Full Time, 12% Part Time, 2% Temporary, and 3% Contract. Highlights an 89% Physical, 3% Hybrid, and 8% Remote job distribution.

Sr. Prototype Engineer

Ampa, Inc.

San Diego, CA • On-site

$75K - $90K/yr

Full-time

Re-posted 2 days ago


Job description

Ampa is a pioneering neurotechnology startup developing brain stimulation technology to help eradicate depression. We will improve millions of lives by making this transformative treatment universally accessible. Joining us means you'll be part of a rapidly growing startup with significant equity opportunities and a major impact on our future.
What to Expect:
Working at Ampa is a rare chance to help transform global mental health and save millions of lives - a level of impact that demands deep commitment. Success here requires resilience, adaptability, and the discipline to put in long hours. If you thrive in a high-intensity, fast-changing environment and want your work to truly matter, you may do the best work of your life here.
Role Overview:
We're seeking a hands-on Sr. Prototype Engineer to support the development, testing, and validation of next-generation transcranial magnetic stimulation (TMS) devices. You'll work closely with engineering teams to build, troubleshoot, test, and improve early-stage systems while helping establish repeatable testing and documentation processes as we scale. You will also serve as a hands-on technical owner in the San Diego lab, helping bring structure, rigor, and follow-through to prototype testing, troubleshooting, and lab execution.
This role is ideal for someone who enjoys working directly with physical hardware, solving practical engineering problems, and moving fluidly between bench testing, data analysis, documentation, and prototype iteration. You'll play a key role in helping transform evolving concepts into robust, testable, and manufacturable medical technologies. We're looking for someone with roughly 3 years of hands-on mechanical/hardware experience - seasoned enough to work independently, but this role sits downstream of design: the large majority of time is spent on hands-on, repetitive testing and validation rather than creating new designs from scratch.
Key Responsibilities:
  • Prototype Development & Testing: Build, troubleshoot, and iteratively test biomedical and electromechanical prototypes while developing and executing structured test procedures to evaluate device performance, reliability, safety, and failure modes.
  • Lab Execution: Serve as a hands-on technical owner for prototype testing, troubleshooting, lab execution, and follow-through on open engineering actions.
  • Data Collection & Analysis: Collect, organize, and analyze prototype test data to identify trends, anomalies, performance issues, and engineering improvements. Maintain precise, traceable test records by unit, condition, setup, result, deviation, and follow-up action.
  • Documentation & Quality Support: Create and maintain clear, traceable test documentation, engineering records, and verification protocols in support of QMS and regulated product development processes.
  • Cross-Functional Collaboration: Work closely with multidisciplinary engineering teams to support fast-paced R&D projects, improve prototype designs and test methods, and adapt to evolving development priorities.

What We're Looking For:
  • Mission-Driven: Passionate about helping eradicate depression through breakthrough neurotechnology.
  • Driven & Adaptable: Highly motivated, coachable, and thrives in fast-paced startup environments with evolving priorities.
  • Technical Background: Technical Background: Working SolidWorks and mechanical design competency, including the ability to open, review, and modify parts/assemblies, interpret 2D drawings, support tolerance updates, and create or modify basic fixture/prototype designs. Hands-on experience building, assembling, and troubleshooting electromechanical assemblies (e.g., wiring, connectors, sensors, actuators/motors) is expected. Background in biomedical, mechanical, mechatronics, electrical, robotics, product development, or a related field. Basic soldering experience and comfort working with hardware components are a plus. Roughly 3 years of hands-on mechanical/hardware experience preferred.
  • Hands-On Problem Solver: Strong troubleshooting, prototyping, and hardware testing skills with attention to detail.
  • Comfortable with Repetition: Excited to spend the large majority of time on hands-on, repetitive testing and validation work downstream of design, not just design/creation work.
  • Documentation & Quality: Able to maintain structured technical documentation and support testing, verification, and QMS-related processes.
  • Preferred Experience: Prior experience as a mechanical test engineer, hardware test engineer, biomedical prototype engineer, R&D lab engineer, or similar hands-on hardware testing/validation role.

Why Join Ampa?
  • Impact: Use hands-on hardware engineering to transform mental health on the planet.
  • Growth: Thrive in a startup environment with rapid innovation.
  • Stability: Enjoy startup benefits with a secure product line.
  • Ownership: Receive substantial equity as an early team member.
  • Growth Path: This role has a clear runway to grow into a more senior mechanical engineer or R&D lab lead position as you build tenure and take on more ownership.

Logistics:
  • Work Mode: Onsite
  • Location: San Diego, CA
  • Compensation: $75k-$90k base salary + equity
  • Employment Type: Full-time, Permanent