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Firmware Test Engineer II

Milwaukee Tool · Brookfield, WI · Full time

Posted Sep 4, 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 new 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’re pushing the limits in firmware engineering, power electronics, embedded systems, machine learning, and the use of artificial intelligence. Behind our doors you’ll 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’ll 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 teams to design and execute tests used to validate firmware used on embedded systems. You will participate in the new product development process supporting deliverables at key milestones. You’ll also be DISRUPTIVE through these duties and responsibilities: • Design, develop, execute, and troubleshoot test procedures for firmware features, applications, and subsystems of low to mid-level complexity with minimal supervision from Senior/Principal engineers. • Facilitate review and refinement of engineering requirements for test needs. • Facilitate peer-review of test designs and automation. • Support development of test plans that enable the delivery of firmware that meets all requirements by testing. • Support agile project teams through the new product development process. • Lead continuous improvement efforts of test development. • Conduct experiments, perform simulations, and draw concise, logical conclusions by analyzing data. • 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. • Role model Milwaukee Tool’s culture while providing technical guidance, mentorship, and coaching junior Engineers. What TOOLS you’ll bring with you: • Bachelor of Science Degree in Electrical Engineering, Computer Engineering, Computer Science, or related field. • 2+ years of experience with verification/validation testing, hardware in the loop (HIL) testing, embedded systems and/or PCBA design. • Ability to read schematics and component data sheets, along with a proficient understanding of digital circuits to understand the interaction between firmware and electronics. • Experience using laboratory equipment such as oscilloscopes, logic analyzers, power supplies, e-loads, data acquisition systems, multimeters, power analyzers, etc. • Exposure to National Instrument hardware, Test Stand, and/or LabView in automated testing (Development or Execution). • Exposure to various scripting languages (Python, C#, or C/C++ etc.). • Experience participating in the software development lifecycle. • Proficient using tools required for software configuration management, requirements management, defect tracking, and peer review. • Experience with one or more of the following: DevOps, automated testing, continuous integration/continuous deployment (CI/CD). • Excellent problem-solving skills, exercises independent judgement, and works well under pressure in a dynamic environment. • Self-motivated, organized, efficient, and process oriented. • Strong communication skills (verbal and written). • Ability to travel up to 10% (Domestic and International). Other TOOLS we prefer you to have: • Experience developing or executing unit tests and a basic understanding of structural testing methodologies. • Experience collaborating cross-functionally outside of your core discipline. • Exposure to bare-metal firmware design. We provide these great perks and benefits: • Robust health, dental and vision insurance plans. • Generous 401 (K) savings plan. • Education assistance. • On-site wellness, fitness center, food, and coffee service. • And many more, check out our benefits site HERE . Milwaukee Tool is an equal opportunity employer.

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