Senior Design Engineer - Batteries
Posted Apr 17, 2026 · We last checked this listing on Oct 6, 2026
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 platform-level design you led. How did you get other teams to adopt it?
What they are checking: Leading cross-project work through influence rather than authority.
Tell me about a time you found a design problem late in a project. What did you do?
What they are checking: Owning late problems honestly and finding a path that protects the product and schedule.
What would you do
You lead platform design while supporting many NPD projects. How do you handle a product team that wants a one-off change to the interface?
What they are checking: Protecting platform standards while still helping individual projects meet their goals.
How do you work with electrical engineers on thermal and current requirements for a mechanical interface?
What they are checking: Collaborating across disciplines so mechanical and electrical needs are both met.
About the work
The battery interface has to stay compatible across a whole platform of tools. How do you change it without breaking compatibility with packs already in the field?
What they are checking: Respect for backward compatibility, which is central to a battery platform users have already invested in.
Walk me through how you would design the terminal connection between a battery and a high-draw tool.
What they are checking: Understanding contact resistance, heat, wear and vibration at a high-current connection.
A terminal is running hot during a high-load test. How do you find out why?
What they are checking: Systematic thermal troubleshooting across contact force, materials, plating and geometry.
How would you design a latch so a pack stays put when a tool is dropped, but a user with gloves can still release it easily?
What they are checking: Balancing durability against user fit experience, which the posting names as a requirement.
What durability tests would you run on a battery interface, and how do you tie them to real jobsite use?
What they are checking: Linking insertion cycles, drop, vibration and contamination tests to actual user abuse.
How do you pick materials and plating for battery terminals?
What they are checking: Knowledge of conductivity, corrosion, fretting and cost tradeoffs in contact materials.
How would you use tolerance analysis to make sure every pack fits every tool on the platform?
What they are checking: Stack-up skill for parts made by many suppliers across many years.
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As published by Milwaukee Tool.