I was called after submitting my resume at a college job fair. I was brought in and asked brain teasers then think-out-of-the-box questions. I received a second call to tell me that they were flying me out to their headquarters. They paid for the flight, transport, lodging, and food. I arrived the night before the interview. I was then picked up by a shuttle with 4 other candidates (none from the same position I was interviewing for). I was given the tour, then placed in what seemed like an interrogation room. For the rest of the business day, I was grilled by many different people covering many different interview types. Ones that stood out was an entire interview based on academics (derive an equation), a lateral thinking interview, and a 'role-playing' interview (to gauge personality and sociability I would assume). It was an overall tough interview but on par with engineering positions I have interviewed with before.

The interview was an online video call. The interviewer introduced themselves and talked about their time with the company. They asked me about my experiences and interest in the job. After we worked collaboratively on some short analog circuitry problems, things like calculating output voltage, finding if the circuit achieved requirements, and discussing possible issues.