Probably the worst interview I ever had. First you get in touch with a recruiter, following by a tech screen interview with one engineer with commons questions that I don't consider difficult. Then you have a home test to do which follows a meeting to discuss your solution with two engineers. One of the interviewers was all the time writing on Slack/chat/whatever meanwhile I was trying to think a solution. I didn't have "context" about what to expect in this meeting, in the test said no third parties/techs allowed, so I took my time to review pure code concepts/algorithms. But then they started to ask about libraries/third parties implementations, I've worked with many of these techs but I didn't consider that was necessary to review them since third parties were not allowed in the test.

Candidates have the right to know what to expect and prepare accordingly the interview.

Data structures, algorithms, patterns, server distribution...