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Volunteer User Testing Jobs in California (NOW HIRING)

Sr Engineer, Embedded GUI Software

Irvine, CA · On-site

$120K - $170K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

... testing and documentation. Day to day: * Design and develop C++-based GUI applications and ... Implement and maintain graphics-driven user interfaces, balancing usability, performance, and ...

Business Analyst

Irvine, CA · On-site

$130K - $160K/yr

  • Medical

  • Life

  • Retirement

  • PTO

Build and run test scenarios; organize and facilitate user acceptance testing. * Capture defects ... to volunteer, Paid Time off, ESPP, and 401K matching. At Redwood Trust, we are committed to ...

Business Analyst

Irvine, CA

$130K - $160K/yr

  • Medical

  • Life

  • Retirement

  • PTO

Build and run test scenarios; organize and facilitate user acceptance testing. * Capture defects ... to volunteer, Paid Time off, ESPP, and 401K matching. At Redwood Trust, we are committed to ...

Financial Systems Analyst

San Mateo, CA · Hybrid

$58 - $63.58/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

This individual will lead multiple concurrent system projects, perform User Acceptance Testing and ... Life Insurance (Voluntary Life & AD&D for the employee and dependents) * Short and long-term ...

Financial Systems Analyst

Foster City, CA · On-site

$58/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

This individual will lead multiple concurrent system projects, perform User Acceptance Testing and ... Insurance (Voluntary Life & AD&D for the employee and dependents) • Short and long-term ...

Automation Tester/ SDET

San Francisco, CA

$71/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Build automated UI, functional, regression, integration, and performance tests * Create scalable ... Help define testing strategies for new mobile features and products Required Qualifications

Own the physical design and user experience for Platform 2 updates or new system elements ... Research customer and operator needs through observation, interviews, prototyping, and testing ...

Product Designer

Los Angeles, CA · On-site

$85K - $95K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

  • PTO

... UI, and visual design and, ideally, experience in split testing and conversion optimization ... Paid charity and volunteer days (local mentor programs, adopt a pet, beach cleanup, etc.) * Monthly ...

Senior Visual Designer

Tustin, CA · On-site

$43.27/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Use data from A/B testing and user analytics to proactively refine designs, focusing on improving ... Voluntary Life Insurance * Disability Insurance * Critical Illness Coverage * Accident Insurance ...

Senior Visual Designer

Tustin, CA

$43.27/hr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Use data from A/B testing and user analytics to proactively refine designs, focusing on improving ... Voluntary Life Insurance * Disability Insurance * Critical Illness Coverage * Accident Insurance ...

Use data from A/B testing and user analytics to proactively refine designs, focusing on improving ... Voluntary Life Insurance * Disability Insurance * Critical Illness Coverage * Accident Insurance ...

Digital Product Owner (SFMC)

Irvine, CA

  • Medical

  • Dental

  • Vision

  • Retirement

... volunteering, philanthropy, and the empowerment of our Employee Resource Groups. Together, we ... user stories with defined acceptance criteria and testing. This role collaborates closely with ...

Digital Product Owner (SFMC)

Irvine, CA · On-site

$88K - $136K/yr

  • Medical

  • Dental

  • Vision

  • Retirement

... volunteering, philanthropy, and the empowerment of our Employee Resource Groups. Together, we ... user stories with defined acceptance criteria and testing. This role collaborates closely with ...

Sr. Product Analyst - WalkMe

San Diego, CA · Remote

$80K - $134K/yr

  • Medical

  • Retirement

  • PTO

Analyze user behavior data and platform insights to identify adoption challenges and optimization ... Conduct testing and quality assurance activities to validate functionality, usability, and ...

Sr. Product Analyst - WalkMe

San Diego, CA · Remote

$80K - $134K/yr

  • Medical

  • Retirement

  • PTO

Analyze user behavior data and platform insights to identify adoption challenges and optimization ... Conduct testing and quality assurance activities to validate functionality, usability, and ...

Salesforce Administrator

Los Angeles, CA · Remote

$90K - $150K/yr

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Test new Salesforce releases and enhancements, coordinate user acceptance testing (UAT), and assist ... Company-paid Life Insurance and AD&D Coverage, Voluntary Life Insurance * Short-term and Long-term ...

Salesforce Administrator

Los Angeles, CA · Remote

  • Medical

  • Dental

  • Vision

  • Life

  • Retirement

  • PTO

Test new Salesforce releases and enhancements, coordinate user acceptance testing (UAT), and assist ... Company-paid Life Insurance and AD&D Coverage, Voluntary Life Insurance * Short-term and Long-term ...

Showing results 41-60

Volunteer User Testing information

How do I become a volunteer user tester?

To become a volunteer user tester, you typically need to sign up through testing platforms or company websites that offer testing opportunities. You may be required to complete a profile, demonstrate basic device or software skills, and sometimes participate in training or onboarding sessions. Consistent availability and clear communication are important for successful testing roles.

What are the most commonly searched types of User Testing jobs in California?

The most popular types of User Testing jobs in California are:

What job categories do people searching Volunteer User Testing jobs in California look for?

The top searched job categories for Volunteer User Testing jobs in California are:

What cities in California are hiring for Volunteer User Testing jobs?

Cities in California with the most Volunteer User Testing job openings:

Infographic showing various Volunteer User Testing job openings in California as of July 2026, with employment types broken down into 1% As Needed, 80% Full Time, 13% Part Time, 1% Temporary, 4% Contract, and 1% Nights. Highlights an 87% Physical, 3% Hybrid, and 10% Remote job distribution.

Sr Engineer, Embedded GUI Software

Masimo

Irvine, CA • On-site

$120K - $170K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Re-posted 27 days ago


Job description

Job Summary: 

As a Sr Instrument Software Engineer, you will design, develop, and maintain high-performance graphical applications for next-generation patient monitoring devices. This role leverages strong expertise in C++ development, computer graphics, and interactive UI systems to build reliable, efficient, and visually intuitive user interfaces. You will work on performance-critical software, collaborate closely with cross-functional teams, and contribute throughout the full software lifecycle-from design and implementation to testing and documentation.

Day to day: 

  • Design and develop C++-based GUI applications and visualization tools for embedded medical devices.
  • Implement and maintain graphics-driven user interfaces, balancing usability, performance, and memory constraints.
  • Build and optimize runtime systems, data formats, and serialization pipelines to support responsive UI behavior.
  • Apply strong multithreading, memory management, and performance optimization principles.
  • Participate in peer design and code reviews, ensuring software quality and maintainability.
  • Produce clear software documentation and technical specifications.
  • Contribute to software testing and validation, supporting stable and reliable device behavior.
  • Collaborate in a fast-paced, cross-disciplinary development environment.

Required Qualifications:

  • Strong fundamentals in computer graphics and real-time rendering concepts.
  • 5+ years of C++ software development experience in performance-critical systems.
  • Hands-on experience with GUI design and development, including visual tooling and user-facing interfaces.
  • Solid understanding of operating system concepts, including scheduling, memory management, and multi-threading.
  • Experience with software configuration management tools (Git, Jira-style workflows).
  • Excellent analytical, problem-solving, and debugging skills.
  • Strong verbal and written communication skills.
  • Ability to excel in a dynamic, fast-moving development environment.
  • BS or MS degree in Computer Science, Electrical Engineering, or a related field.
  • Ability to work onsite Monday - Friday in Irvine, CA. 

Preferred Qualifications:

  • Experience with Qt / QML or similar GUI frameworks.
  • Experience with OpenGL / OpenGL ES and shading languages (GLSL).
  • Background in GPU-accelerated or graphics-intensive applications.

Education:

  • BS or MS degree in Computer Science or Engineering

Compensation:

The anticipated salary range for this position is $120,000 - $170,000 plus benefits. Actual placement within the range is dependent on multiple factors, including but not limited to skills, education, and experience. This position also qualifies for up to 10% annual bonus based on Company, department, and individual performance. Masimo offers benefits such as Medical, Dental, Vision, Life/AD&D, Disability Insurance, 401(k), Vacation, Sick, Holiday, Paid Maternity Leave, Flexible Spending Accounts, voluntary Accident, Critical Illness, Hospital, Long-Term Care, Employee Assistance Program, Pet Insurance, on-site Wellness Clinic, Fitness Center, Cafe. All benefits are subject to eligibility requirements.


Masimo logo

About Masimo

Sourced by ZipRecruiter

Industry

Medical equipment and supplies manufacturing

Company size

1,001 - 5,000 Employees

Headquarters location

Irvine, CA, US

Year founded

1989

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