Senior Electrical Engineer
Posted Sep 28, 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 an electrical design you led for a product that went into production.
What they are checking: Whether they have owned a full electrical design through to manufacturing, which a senior role requires.
How do you work with firmware engineers to define the hardware and software split?
What they are checking: Whether they collaborate well across disciplines, since most product issues sit at that boundary.
Tell me about a time you mentored a junior engineer through a difficult design problem.
What they are checking: Whether they help others grow, which is expected from a senior engineer on the team.
What would you do
A product is failing in the field and the boards look fine on the bench. How do you find the cause?
What they are checking: Whether they consider real conditions like temperature, voltage swings and installation errors when debugging.
About the work
How do you design low-power electronics for battery-operated products like sensor faucets or flush valves?
What they are checking: Whether they understand sleep currents, power budgets and component choices that decide battery life.
How do you design for EMC and pass FCC or similar emissions testing the first time?
What they are checking: Whether they plan layout and filtering up front, since failed compliance tests delay launches.
What considerations change when electronics will be installed near water in commercial restrooms?
What they are checking: Whether they design for moisture, corrosion and safety listings that plumbing products require.
How do you choose components to manage cost, lead time and end-of-life risk?
What they are checking: Whether they think about supply chain risk, which can stall production for long-lived products.
How do you approach connected products, such as adding wireless or cloud connectivity to a fixture?
What they are checking: Whether they understand radio design, power and security tradeoffs in connected building products.
How do you run a design review, and what do you look for in someone else's schematic?
What they are checking: Whether they catch common mistakes and help the team ship more reliable designs.
Practice this interview out loud.
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Practice this out loudThe full job description
As published by Zurn Elkay.