The interview process took 2-3 weeks.

First, I was contacted by a recruiter. He really liked my profile, and we had a good 30-minute talk.

After that, he scheduled a technical phone interview. The interviewer seemed disinterested, and I got the feeling they were conducting the interview just for the sake of it. He asked me really easy questions, all of which I could answer.

The next day, I received a rejection via an automated email. I was shocked.

When you don't want to hire people, why interview them in the first place?

When asked for the reason for rejection, they stated it was their policy and they couldn't disclose it. A weird and unprofessional experience.

They gave me a scenario of their internal sensor data acquisition system and told me to generate an alert when the state of the system changes.