Roles › Intern Mechanical Engineer
Neenah, WI
Intern Mechanical Engineer jobs in Neenah, WI
3 open roles from 1 employer. Checked Oct 6, 2026.
What these openings look like
All 3 are at Plexus. Every one publishes a pay range, and they run $23.00 to $27.00 an hour. Every posting is full time. The most recent went up on Sep 1, 2026.
Every listing links to the employer's own application. Nothing is posted here on their behalf, and nothing is reposted from anywhere else.
Open roles
What it pays here
Only some employers publish a range. These are the ones that did, as written in their own postings:
- $23.00–$27.00 an hour
What they ask intern mechanical engineer candidates here
Drawn from the 3 open postings on this page. The ones that come up across several employers are near the top.
Tell me about a mechanical design project you worked on in school or on a team. What was your part?
What they are checking: Whether they have done hands-on design work and can explain their own contribution.
What CAD software have you used, and how did you use it on a real project?
What they are checking: Whether they can model parts and assemblies well enough to contribute early.
How do tolerances on a drawing affect whether a part can actually be manufactured?
What they are checking: Whether they understand that design choices drive cost and difficulty on the shop floor.
Plexus builds things like surgical systems and aerospace hardware. How would designing for those differ from a consumer product?
What they are checking: Whether they appreciate the higher stakes and documentation needed in regulated industries.
Walk me through how you would design an enclosure that keeps electronics cool.
What they are checking: Whether they can reason about heat transfer and airflow from basic engineering principles.
Tell me about a design that did not work the first time. What did you change?
What they are checking: Whether they learn from testing and iterate rather than defending a first idea.
How would you choose between machining, sheet metal or injection molding for a part?
What they are checking: Whether they understand basic manufacturing processes and how volume and cost drive the choice.
You are given a task and you are not sure where to start. What do you do?
What they are checking: Whether they ask good questions and take initiative instead of waiting quietly.
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