Senior Hardware Development Engineer
Posted Sep 16, 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 time you worked closely with firmware or manufacturing engineers to solve a problem.
What they are checking: Whether they collaborate across disciplines, which is needed for controllers and I/O.
Tell me about a design decision you made that you later regretted.
What they are checking: Whether they learn from mistakes honestly and bring that judgment to new designs.
What would you do
A prototype has an intermittent failure on an I/O channel. How do you troubleshoot it?
What they are checking: Whether they troubleshoot methodically with measurements instead of swapping parts at random.
How do you balance cost reduction with reliability in a hardware design?
What they are checking: Whether they make cost tradeoffs without weakening a product used in safety applications.
About the work
Walk me through a board you designed, from requirements and design calculations to a working prototype.
What they are checking: Whether they have real end-to-end hardware design experience.
What makes hardware design for process safety controllers different from ordinary industrial electronics?
What they are checking: Whether they understand functional safety ideas like redundancy and diagnostics for safety-rated products.
How do you design a board so it's easy to test in manufacturing?
What they are checking: Whether they understand design for testability, which the posting calls out directly.
What compliance tests like EMC or safety have you run, and what did you do when a design failed one?
What they are checking: Whether they've taken products through compliance and can fix failures.
How do you write a test plan for a new hardware design?
What they are checking: Whether they plan verification that covers requirements, edge cases and environmental conditions.
What design documentation do you create, and who is it for?
What they are checking: Whether they write documentation that others can use for manufacturing, testing and certification.
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Practice this out loudThe full job description
As published by Rockwell Automation.