HR in the company works really slowly and doesn't seem to care about any future employees. (A big no if you have other offers).

Pretty easy HackerRank test. Level: Easy.

Onsite rounds:

Two rounds. During the first interview, they asked pretty simple things initially. When I answered all the questions, it looked like they ran out of questions and started asking anything (which I didn't really understand, nor were they able to explain).

During the second interview, the interviewer was asking anything but job-related questions. It seemed the interviewer didn't have enough technical knowledge for the questions they were asking.

How a HashMap Works Internally?