IMC Trading Senior Java Developer interview questions

The interview process consisted of HR screening, a test assignment, and several stages of technical interviews. The questions on the technical interview were barely related to the real work and did not reveal the candidate's experience for the chosen position. The interviewers were arrogant and haughty.

I was reached by a recruiter on LinkedIn. Then they sent a home assignment to complete in 3 days. After that I had an on site interview. Home assignment was nice, I was asked to create a rock paper scissors game. They wanted good test coverage, good architecture. They wanted to see some software patterns. All of these make much sense for me and made me to have a good impression about the company. I spent my weekend, worked hard and created a very nice project including ui. Unfortunately, my impression was absolutely opposite about the on-site interview. They didn't ask ANYTHING related to the assignment. Then, why did they give that assignment? They asked me java profiler, which command to execute to find cpu consuming processes on Linux, how garbage collector works etc. This was the worst recruitment setup I've ever seen...