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Software Testing Internship Jobs in Fairfield, CA

Astro Mechanica

Flight Software Engineer

San Francisco, CA · On-site

$90K - $160K/yr

... internships and research experience * Experience in C++, Rust, or other systems programming ... Proven skills in debugging, performance optimization, and unit testing * Ambition to work in a fast ...

RRC

Sr. Software Engineer

San Francisco, CA · On-site

$180 - $240/hr

... CD and testing standards. * Driving Projects to the Finish Line: You will own the technical ... Production-Proven Backend Depth: 6+ years of professional, non-internship software engineering ...

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BRM.ai

Entry Level Software Engineer

San Francisco, CA · On-site

Learn and apply best practices in code quality, testing, and documentation while contributing to ... Previous internship or project experience with B2B SaaS applications * Interest in or exposure to ...

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Software Testing Internship information

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How much do software testing internship jobs pay per hour?

As of Aug 21, 2026, the average hourly pay for software testing internship in Fairfield, CA is $25.87, according to ZipRecruiter salary data. Most workers in this role earn between $21.06 and $29.38 per hour, depending on experience, location, and employer.

What is a software testing internship?

A Software Testing Internship is a temporary position where students or recent graduates gain practical experience in testing software applications for bugs, usability, and performance issues. Interns work under the guidance of experienced testers or quality assurance engineers and may be involved in manual or automated testing processes. The internship provides hands-on exposure to industry-standard testing tools, methodologies, and documentation practices, helping interns build foundational skills for a career in software quality assurance.

What types of projects and tasks can I expect to work on during a software testing internship?

As a Software Testing Intern, you will typically assist with writing and executing test cases, identifying and documenting bugs, and working closely with the development team to ensure product quality. You may also get hands-on experience with various testing tools and methodologies, such as manual testing, automated testing, and regression testing. Interns often participate in daily stand-ups and collaborate with quality assurance engineers to understand best practices, providing a valuable opportunity to learn about the software development lifecycle and gain practical skills that are highly valued in the industry.

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

To thrive as a Software Testing Intern, you need a foundational understanding of software development concepts, basic programming skills, and knowledge of testing methodologies, often demonstrated through coursework or relevant certifications. Familiarity with tools like Selenium, JIRA, or TestRail, as well as basic scripting languages, is typically expected. Strong attention to detail, analytical thinking, and effective communication help interns identify issues and collaborate with development teams. These skills and qualities are vital for ensuring software quality, catching defects early, and supporting team efficiency in the development lifecycle.

What is the difference between Software Testing Internship vs QA Tester?

AspectSoftware Testing InternshipQA Tester
Required CredentialsTypically pursuing or recent graduate in Computer Science or related fieldRelevant certifications (e.g., ISTQB) often preferred, with some experience
Work EnvironmentEntry-level, training-focused, often in tech companies or software firmsFull-time role in software development or quality assurance teams
Employer & Industry UsageInternships offered by tech companies, startups, and software firmsPermanent position in IT, software development, and quality assurance industries

In summary, a Software Testing Internship is an entry-level, training-focused position for students or recent graduates, while a QA Tester is a full-time professional role requiring more experience and certifications. Internships serve as a stepping stone into a QA career, which involves ongoing responsibilities in software quality assurance.

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The top searched job categories for Software Testing Internship jobs in Fairfield, CA are:

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Cities near Fairfield, CA with the most Software Testing Internship job openings:

Software Testing Internship jobs near you

Embedded Software Engineer Intern - Fall 2026

Redwood Materials

San Francisco, CA • On-site

$154K - $203K/yr

Internship

Posted 21 days ago

Redwood Materials rating

7.6

Company rating: 7.6 out of 10

Based on 8 frontline employees who took The Breakroom Quiz

24th of 91 rated recycling and waste

Job description

Embedded Software Engineering Intern 

We are at the precipice of a global energy transition. At Redwood Materials, we are moving beyond battery recycling to build the most advanced, circular energy ecosystem on the planet. Our goal is to move the industry away from static, hardware-heavy infrastructure toward agile, software-controlled energy assets. 

While others build "black box" hardware, we are building software-defined power systems. Our Embedded Software team is responsible for the intelligence that drives our power stages and battery management systems, ensuring our energy storage solutions are safe, efficient, and capable of stabilizing the world's most demanding grids. 

As an Embedded Software Engineering Intern, you'll work alongside our engineers on the real-time firmware that drives our power conversion units. You'll get hands-on exposure to the intersection of silicon and power - helping write and test low-level code that controls high-speed switching, manages thermal safety, interfaces with battery packs, and communicates with broader site infrastructure. This is a great opportunity to apply what you've learned in coursework to real embedded systems that ship at scale, with mentorship from experienced engineers along the way. 

Responsibilities will include: 

  • Real-Time Control Firmware: Support the design and implementation of bare-metal software for power electronics, gaining exposure to PWM generation, ADC synchronization, and timing logic. 
  • Low-Level Architecture: Assist in developing and testing drivers for microcontroller peripherals (SPI, CAN, Ethernet) under the guidance of senior engineers. 
  • Hardware-Software Collaboration: Work with power electronics controls engineers to understand how controls theory translates into embedded code running on Cortex-R and Cortex-M architectures. 
  • Battery Management Systems: Get exposure to how our power conversion firmware interfaces with real battery packs - including cell voltage/temperature monitoring, state-of-charge and state-of-health estimation, and the communication protocols BMS units use to report status and safety limits. 
  • Build & Test: Help maintain software build scripts and write testable code, gaining experience with CI/CD pipelines used to validate firmware before it reaches the lab. 
  • System Debugging: Learn to profile and debug embedded code, developing familiarity with tools like oscilloscopes, logic analyzers, and JTAG/SWD debuggers. 
  • Documentation & Process: Contribute to documentation and testing processes that support taking embedded systems from prototype toward production. 

Desired Qualifications: 

  • Background: Currently pursuing a BS or MS in Electrical Engineering, Computer Engineering, Computer Science, or a related field. 
  • Programming Foundations: Coursework or project experience in C, C++, or Rust; comfort reading and writing low-level code. 
  • Embedded Interest: Some exposure to embedded systems, microcontrollers, or digital logic through coursework, personal projects, or prior internships. 
  • Communication Protocols: Familiarity with concepts like SPI, I2C, UART, or CAN is a plus, even if only from classwork or personal projects. 
  • Battery Systems Knowledge: Exposure to battery management systems (BMS) and energy storage fundamentals through coursework or projects is a plus, though not required. 
  • Curiosity & Rigor: A safety-conscious mindset, strong attention to detail, and eagerness to learn how real-time, safety-critical software is built. 
  • Bonus Qualifications: Any experience with build tools (Make, CMake), version control (git), or hands-on lab work with debugging hardware. 

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