First, a phone interview was conducted, with many technical questions about basic semiconductor device physics.

Then, an on-site interview invitation was received.

The interview process included:

• A 45-minute presentation.
• Meeting six engineers consecutively, one hour per person.

Half of the questions were behavioral, and half were technical, with a primary focus on PhD research.

A call was received the next day offering the position.

What is the physical meaning of the threshold voltage of a transistor?

How do you define it?