Mercury Marine: Software Controls Engineering Intern
Posted Aug 30, 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 project where you used MATLAB or Simulink, even for a class assignment. What were you building and what did you learn?
whether the candidate has real hands-on exposure to the core tools of the role rather than just classroom familiarity
Have you worked with an oscilloscope or similar test equipment before? Tell me about a time you had to capture and interpret data from a physical system.
comfort with hands-on lab equipment, which is explicitly called out as an essential function
Tell me about a time you had to document technical work clearly enough that someone else could pick it up after you.
whether they understand documentation as a real deliverable, since updating control software docs is a listed duty
Describe a group project, in school or otherwise, where you had to coordinate with people outside your immediate team to get something done.
readiness to work cross-functionally with other Mercury departments and outside suppliers as the posting describes
Tell me about a time something you built or tested didn't work the way you expected. What did you do next?
resilience and troubleshooting mindset when results don't match expectations, a constant reality in controls testing
Technical
Walk me through how you would design a simple PID controller for a system like engine RPM or throttle position. What would you tune first and why?
basic conceptual grasp of PID control logic since it's a preferred qualification directly tied to engine control work
What do you know about CAN networks or CAN communication, and have you ever worked with them directly?
depth of exposure to the specific communication protocol used in engine control systems, since it's called out as preferred knowledge
What's the difference between simulating a control algorithm and testing it on a target controller? Why do both steps matter?
understanding of the model-in-the-loop to hardware-in-the-loop workflow used in control software development
Situational
Say you're testing embedded software on a simulation board and the results don't match what you expected from the model. How would you go about figuring out where the mismatch is coming from?
debugging process and whether they know to isolate hardware, software, and model differences systematically
If you were handed embedded software to test on an actual engine or boat, what safety or process considerations would go through your mind before you started?
awareness that testing on physical hardware carries real risk and requires discipline, not just curiosity
You're given a task and told to own it from start to finish with minimal supervision. What does your first week on that task look like?
independence and planning ability, since the role explicitly expects interns to manage assigned projects themselves
If a supplier or customer reported a problem with how a control feature behaved, how would you approach figuring out whether it's a hardware issue, a software bug, or a misunderstanding of how it's supposed to work?
structured problem-solving when the root cause spans multiple domains, which mirrors the consulting-with-suppliers duty in the posting
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As published by Mercury Marine.
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