Sr. Automation Engineer - Mechatronics
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
Walk me through an automated test system you built from scratch, from requirements to running in the lab.
What they are checking: End-to-end ownership of a test station across mechanical, electrical and software pieces.
Tell me about a time a test system you built produced data that turned out to be wrong. How did you catch it?
What they are checking: Humility and rigor in verifying that a test system measures what it claims.
Tell me about a time you mentored a less experienced engineer on an automation project.
What they are checking: Senior-level willingness to build up teammates instead of doing everything alone.
What would you do
The validation team needs a new test in four weeks, but a proper station would take ten. What do you do?
What they are checking: Finding a workable interim solution while being honest about its limits.
How do you work with product engineers who keep changing what they want the test to do?
What they are checking: Managing shifting requirements with clear scope, communication and change control.
About the work
How would you design a fixture to cycle-test a cordless tool's trigger and switch thousands of times?
What they are checking: Practical mechatronic design with actuators, sensors and durability in mind.
What PLC or control platforms have you programmed, and how do you structure the code so someone else can maintain it?
What they are checking: Writing control logic that is clear and supportable, not just functional for its author.
How do you choose sensors to measure torque, speed or current on a tool under test?
What they are checking: Matching sensor range, accuracy and sample rate to what the test needs to capture.
A test station gives results that drift over a long test run. How do you find the cause?
What they are checking: Troubleshooting across mechanical wear, sensor drift, thermal effects and software.
How do you build safety into an automated test cell where people will load tools?
What they are checking: Awareness of guarding, interlocks and safe states for people working near automation.
How do you make sure test data gets saved and is easy for engineers to use later?
What they are checking: Thinking about data logging and structure as part of the test system, not an afterthought.
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As published by Milwaukee Tool.