I had two coding challenges.

The first one was a little hard. They gave me another one that required debugging with milliseconds. The problem was, I was unfamiliar with the Calendar class, and HackerRank doesn't allow copying from the outputs, thus it was really hard to convert/debug milliseconds. The second coding challenge was inappropriate to be used as a coding challenge, especially with the HackerRank platform.

The biggest problem was, throughout the whole process, I had never been contacted by a person. All I received were bot replies; the whole process was very impersonal.