Staff Controls Engineer
Posted Sep 10, 2026 · We last checked this listing on Sep 20, 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.
Behavioral
Tell me about a design you had to change because manufacturing told you it couldn't be built as specified. How did you work with them to land on something that worked for both sides?
real collaboration skill with manufacturing partners, not just deference or stubbornness
Give me an example of a complex engineering problem where the obvious fix wasn't the right one. How did you figure out what was actually going on?
root-cause thinking versus quick patching under pressure
Tell me about a time you had to explain a technical control issue to a non-technical audience, like a program manager or a customer. How did you adjust your explanation?
ability to translate technical detail for varied audiences, a stated requirement
Have you been involved in a standards body or industry group tied to controls or power systems? What did you bring back to your team from that involvement?
genuine engagement with industry standards versus a resume line
Tell me about a time you used cost or risk analysis to choose between two design options that both technically worked.
whether they weigh cost, reliability, and safety trade-offs, not just technical elegance
Technical
Walk me through a control algorithm you designed for a power control or power management application, from the initial requirement to final tuning.
depth of hands-on experience with control design across the full lifecycle, not just theory
Tell me about a time you had to tune a closed loop control system that was unstable or underperforming. What did you look at first and how did you fix it?
practical skill in stability analysis and tuning methodology under real constraints
Describe your experience building a high-fidelity simulation model for a product before hardware existed. How did you validate that the model actually matched reality?
model-based design competence and rigor about model-to-hardware correlation
Have you used auto code generation to go from a model to production-ready code? What issues came up when moving from simulation to the real controller?
whether they understand the gap between simulated behavior and embedded deployment
Tell me about a PLC program you wrote for a machine or process. What was the machine doing, and what tripped you up during commissioning?
direct PLC programming ability and troubleshooting mindset on the floor
Describe a test and validation plan you built that used more than one method, like HIL or SIL along with bench testing or fault injection. Why did you choose that combination?
breadth and judgment in structuring validation coverage, not just running one test type
Situational
You're mentoring a junior engineer who is confident in their approach but you can see a flaw in their control design. How do you handle that conversation?
mentoring style and ability to correct without undermining a junior colleague
Suppose a new product is behind schedule because a supplier's component doesn't meet spec and it's affecting your control loop performance. What do you do in the next week?
prioritization and cross-functional problem solving under schedule pressure
Say a field failure comes back showing your control algorithm is doing something unexpected under a specific fault condition. Walk me through how you would investigate it.
structured debugging approach for a real-world control failure, including fault injection thinking
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