Senior Electrical Engineer - Hardware/Power Electronics
Posted Aug 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 power electronics design you led from concept to production.
What they are checking: Full-cycle ownership at a senior level.
Tell me about a time you mentored a younger engineer on hardware design.
What they are checking: Willingness to grow the team, expected at a senior level.
What would you do
A board fails during stall testing. How do you find the root cause?
What they are checking: Methodical debugging of power failures with the right measurements.
How do you work with firmware engineers so the hardware and control code fit well together?
What they are checking: Collaboration on protection, sensing and control behavior across teams.
Your design meets specs but costs too much. How do you bring cost down?
What they are checking: Cost reduction judgment without sacrificing reliability.
About the work
Walk me through how you would design an inverter for a brushless motor in a cordless tool.
What they are checking: Core power electronics design including MOSFET choice, gate drive and layout.
How do you choose MOSFETs for a high-current tool, and what tradeoffs matter most?
What they are checking: Understanding conduction loss, switching loss, thermal limits and cost.
What layout practices do you follow on a high-current power board?
What they are checking: Practical PCB layout skill for current paths, loop inductance and heat.
How do you design for EMC on a power board, and how do you fix a failure late in development?
What they are checking: EMC awareness during design and practical fixes when testing fails.
How would you estimate the thermal performance of a board before you build it?
What they are checking: Using calculations and simulation to predict heat and size cooling.
How do you design current sensing that stays accurate over temperature?
What they are checking: Precision measurement design in a harsh thermal environment.
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As published by Milwaukee Tool.