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Firmware Test Engineer II

Milwaukee Tool · Menomonee Falls, WI · Full time

Posted Sep 29, 2026 · We last checked this listing on Oct 6, 2026

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Likely interview questions for this role

Written from this job description, not a generic list. Each one notes what the interviewer is really checking.

About your past

Tell me about a bug you found that others missed.

What they are checking: Whether they think creatively about how firmware can fail.

Tell me about a time you improved a test process.

What they are checking: Whether they look for ways to make testing faster and more reliable.

What would you do

A bug shows up only once in hundreds of cycles. How do you track it down?

What they are checking: Whether they can handle intermittent bugs with logging and careful test design.

A developer says a bug you found isn't important. How do you respond?

What they are checking: Whether they can explain user impact and advocate for quality.

How do you decide what to test first when time is short before a release?

What they are checking: Whether they prioritize testing by risk and safety.

About the work

How would you build a test plan for firmware that controls a brushless motor in a power tool?

What they are checking: Whether they can design tests that cover normal use, edge cases and fault conditions.

What's your experience with automated testing for embedded firmware?

What they are checking: Whether they can build test automation that speeds up development and catches regressions.

How do you test battery protection features like over-current or over-temperature shutdown?

What they are checking: Whether they understand safety-critical features in battery-powered tools.

How do you write a bug report that a firmware developer can act on quickly?

What they are checking: Whether their reports are clear, reproducible and useful.

What tools do you use, like oscilloscopes, debuggers or Python, when testing embedded systems?

What they are checking: Whether they have hands-on skills with hardware and scripting tools.

Practice this interview out loud.

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The full job description

As published by Milwaukee Tool.

Job Description: Applicants must be authorized to work in the U.S.; Sponsorship is not available for this position at this time. INNOVATE WITHOUT BOUNDARIES! At Milwaukee Tool we firmly believe that our People and our Culture are the secrets to our success – so we give you unlimited access to everything you need to create disruptive modern technologies and solutions on our electrical engineering teams. Our Engineering Team is responsible for giving life to the batteries, motors, and electronics that power solutions changing the lives of our users. Every developmental phase of these critical components happens in-house under the watch of this team. We continue to invest in electrical engineering resources to design and develop leadership in electronic capabilities; something unique within the industry. And we are pushing the limits in firmware engineering, power electronics, embedded systems, machine learning, and the use of artificial intelligence. Behind our doors you will be empowered every day to own it, drive it, and do what it takes to design and develop the biggest breakthroughs in the industry. Meanwhile, you will have the support and resources of the fastest-growing brand in the construction industry to make it happen. Year after year, our team continues to make significant breakthroughs in the industry. We’re just getting started. To learn more about our story click HERE . The Firmware Test Engineer II will collaborate and establish trusting relationships with cross-functional engineering and testing teams to support Test Management across the firmware verification lifecycle. You will help translate requirements into clear, testable, traceable and automation-ready verification solutions that support new product development deliverables at key milestones. You will also be DISRUPTIVE through these duties and responsibilities: • Review firmware, hardware, and system requirements for clarity, completeness, and testability. • Identify requirement gaps, ambiguities, risks, and traceability issues. • Design and maintain test cases for firmware features and subsystems of low- to mid-level complexity with supervision from Senior/Principal engineers. • Support HIL test development by identifying needed interfaces, instrumentation, and test resources. • Develop and maintain Python-based automated test scripts. • Configure and execute tests using HIL systems, development hardware, and laboratory equipment. • Analyze test failures and help isolate issues to firmware, hardware, test automation, or test setup. • Document test results, objective evidence, and defects with clear, reproducible details. • Collaborate with cross-functional teams in Agile projects and participate in technical reviews. • Contribute to reusable test assets, automation frameworks, process improvements, and continuous learning. • Use Agile methods to define tasks, provide estimates, and communicate progress to ensure adherence to schedule and Milwaukee Tool’s processes. • Schedule, develop agendas for, lead, and document technical meetings and formal presentations. What TOOLS you will bring with you: • Bachelor of Science degree in Electrical Engineering, Computer Engineering, Computer Science, or related field • 2+ years of experience with verification and validation testing, embedded systems and/or PCBA design. • Experience with requirements management, defect tracking, source control, or peer review tools such as JAMA, Azure DevOps, Jira, Polarion, or similar platforms. • Ability to read schematics and datasheets and apply a working understanding of digital circuits and firmware/electronics interaction. • Experience developing or reviewing test cases or test procedures from requirements. • Working proficiency in Python, including the ability to write, execute, and debug test scripts. • Familiarity with laboratory equipment such as oscilloscopes, logic analyzers, power supplies, electronic loads, data acquisition systems, or multimeters. • Structured problem-solving skills and the ability to investigate failures across software, firmware, hardware, and test setup boundaries. • Strong written and verbal communication skills, with the ability to document requirements gaps, test rationale, results, and defects clearly. • Experience collaborating cross-functionally outside of your core discipline which includes accepting technical feedback, managing assigned work, and exercising sound judgment with appropriate guidance. • Ability to travel up to 10%, domestically and internationally. Other TOOLS, we prefer you to have: • Exposure HIL testing, simulation, test-fixture development, or automated test systems. • Experience with National Instruments hardware, TestStand, VeriStand, or LabVIEW. • Experience with black-box and white-box testing, bare-metal firmware, embedded C or C++, unit testing, or structural testing methods. • Exposure to DevOps, automated regression testing, or continuous integration and delivery pipelines. • Experience using AI-assisted engineering or programming tools to • improve productivity and quality. We provide these great perks and benefits: • Robust health, dental, and vision insurance plans. • Generous 401(k) savings plan. • Education assistance. • On-site wellness resources, fitness centers, food, and coffee service. • And many more, check out our benefits site HERE . Milwaukee Tool is an equal opportunity employer.

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