Test Engineer I (December Grads)
Posted Sep 10, 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 fixture design problem you solved, like poor probe contact or wear.
What they are checking: Whether they understand the mechanical side of test and can fix real fixture issues.
How do you support test technicians so they can debug failures without calling you every time?
What they are checking: Whether they build good diagnostics and training so the floor can work independently.
What would you do
First pass yield at functional test drops suddenly. How do you figure out whether it is the product or the tester?
What they are checking: Whether they troubleshoot the test system and the product with equal suspicion, using data.
A customer's test spec is vague or missing limits. How do you handle it?
What they are checking: Whether they work with the customer to define clear requirements instead of guessing.
About the work
Walk me through a production test system you designed or owned. What did it test and how?
What they are checking: Whether they have built real manufacturing test solutions, not just run tests someone else designed.
How do you decide the right mix of ICT, flying probe, boundary scan and functional test for a new board?
What they are checking: Whether they can build a test strategy that balances fault coverage, cost and cycle time.
What test software and languages have you used, like TestStand, LabVIEW or Python?
What they are checking: Whether they can develop and maintain automated test code in common industry tools.
How do you run a gauge R&R or otherwise prove your test is repeatable?
What they are checking: Whether they validate the measurement system itself before trusting its results.
How do you validate a test for a medical or aerospace product, and what documents come out of it?
What they are checking: Whether they understand test method validation and records in regulated manufacturing.
How do you reduce test cycle time without losing coverage?
What they are checking: Whether they can improve throughput thoughtfully rather than just cutting tests.
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Practice this out loudThe full job description
As published by Plexus.