The process involved an online code challenge, a take home project, and a phone screen interview.

The take home project will ask you to build an application with certain requirements. It will take you about 16 hours. And they will deadline it in 4 days upon receiving the email. So, you will have to sacrifice your weekday nights or weekends for it.

In the video interview, they will ask about the take home project. But the interviewer I met, is a very unpleasant person. He started with: "We don't check people's submitted code before interview. I'm going to look into it right now." I mean, I spend the whole weekend for this, and you don't even bother to prepare your questions for it.

As a consequence, he asked question like: why you request Bitcoin data every 60 seconds?

(Ask for Bitcoin data every 60 seconds is a project requirement)

So unprofessional.

Q: You are using MVC. But do you know any other architect?

Q: Do you know the benefits VIPER brings? (N26 is using VIPER)

Q: What does ViewController do? (This is a senior iOS engineer position, I can't believe he still ask me that. Again, I spend the whole weekend for this take home project, and he didn't even spend 5 minutes before the interview to prepare for his questions.)

Q: There are two functions (in my work for the take home project), they have the same name, is one of them private?