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Sr Electrical Engineer - Battery

Milwaukee Tool · Brookfield, WI · Full time

Posted Sep 9, 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 time you found a safety issue in a design. What did you do?

What they are checking: Willingness to raise safety concerns early and push for a fix.

Tell me about a time you had to reduce cost on a board without hurting safety or performance.

What they are checking: Value engineering judgment that protects safety-critical functions.

What would you do

A pack shows uneven cell voltages after a few hundred cycles. How do you investigate?

What they are checking: Diagnosing balancing, cell mismatch and sensing issues together.

How do you work with cell engineers and mechanical engineers on a new pack?

What they are checking: Cross-team collaboration on a product where cells, electronics and housing all interact.

About the work

Walk me through the key functions of a battery management system in a cordless tool pack.

What they are checking: Solid grasp of cell monitoring, balancing, protection and communication in a pack.

How would you design cell voltage and temperature sensing so the readings stay accurate across the pack's life?

What they are checking: Measurement accuracy and drift awareness in safety-critical sensing.

What protections must a pack have against over-current, short circuit and over-temperature, and how do you test them?

What they are checking: Knowing safety-critical protection design and how to prove it works.

How do you design a battery so it can talk reliably with many different tools and chargers?

What they are checking: Communication protocol design for compatibility across a platform.

How do you think about safety standards and certification when designing pack electronics?

What they are checking: Awareness that standards like UL shape design choices from the start.

How do you keep pack electronics working in a tool that gets dropped, soaked and frozen?

What they are checking: Designing electronics for harsh mechanical and environmental conditions.

How would you minimize standby drain so a pack still has charge after months on a shelf?

What they are checking: Low-power design thinking for real user storage patterns.

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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 Sr Electrical Engineer – Battery Electronics will lead the design and implementation of testing of embedded systems and identify engineering trends to drive strategies and Milwaukee Tool’s technical direction. You will work through the product development process in a team environment interacting with cross-functional stakeholders such as hardware, firmware, product development, and reliability engineers. This position will sit at our Headquarters located in Brookfield, Wisconsin. You’ll be DISRUPTIVE through these duties and responsibilities: • Execute a lead role for the design, prototype, test and troubleshoot embedded electronics hardware and firmware for mid to high complexity projects. • Research and engage with prospective suppliers on selection of new technology including Lithium-Ion Battery Management ASICs, microcontrollers, Power Devices, and other analog and digital ICs. • Provide expertise and engineering support on high complexity projects. • Demonstrate Milwaukee Tools Culture of high performance and agility by independently creating Work Breakdown Structure for your work, driving to critical milestones, and giving candid communications up and down the organization on design progress and barrier removal. • Use laboratory equipment to debug and develop your design with oscilloscopes, power supplies, electronic loads, spectrum analyzers, ESD/EMC, data acquisition systems, and analysis software. • Effectively communicate and motivate up, down and across the organization to a diverse range of technical and non-technical team members. • Drive urgency in project schedules and accountability for establishing and achieving key project metrics that meet the organization’s needs. • Independently track projects to ensure adherence to schedule and the Milwaukee process. What TOOLS you’ll bring with you: • Bachelor’s Degree in Electrical Engineering , Computer Science, or related field. • 5+ years of experience in the Embedded Electronics design field including 16/32 bit microcontroller-based circuits for measurement and power control. • Demonstrated design experience in power management with ultra-low power embedded hardware and firmware implementations. • Strong knowledge of industry best practices for design documentation, circuit simulation, schematic capture, layout, and prototype verification testing. • Must be proficient in creation of firmware for purposes of technology evaluations/investigations. • Proven ability to create a Work Breakdown Structure, drive to completion, and communicate progress and escalate barrier removal needs to management. • Self-motivated, organized, efficient, process oriented with a strong work ethic. • Excellent problem-solving skills, exercises independent judgement and works well under pressure in a dynamic environment. • Ability to travel 10% of the time (domestic and international). Other TOOLS we prefer you to have: • Master of Science degree in Electrical Engineering, Computer Science, or related field. • Previous PCBA design experience in Lithium-Ion Battery circuits for high volume products. • Fundamental understanding of Lithium-Ion battery management strategies and circuits as well as f amiliarity with lithium-ion battery management ICs and vendors. 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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