Three telephone interviews were fairly easy.

The first phone call was from an internal recruiter who asked what I knew about the company and my educational background. They went on to explain what Tesla is about and the position for which they were interviewing at the time. In their own words, they are looking for people motivated to work for Tesla and who are excited by the prospect of building the next generation of cars.

The second phone call was from the hiring manager. This was a completely technical interview and a short one too. There were four questions:

• One about a voltage divider circuit application.
• The second was to come up with a fairly simple algorithm.
• The last two were how would you go about testing a calculator and a microwave.

The third call was scheduled for the next day. This was a mixture of both technical and behavioral questions, mostly about my previous projects and school courses, with a couple of behavioral questions.

I was told to expect a call to schedule an onsite interview but didn't hear from them after.

How would you go about testing a calculator?