I feel they are a little bit rude and unprofessional. It have four rounds. The round 2, they threw a set of questions and coding task, it took a week to complete. Round 3 is interview, start the interview, they just ask do you have any questions for us :), it signaled they are not interest d at me. When discussing about their work, I feel they do not know what they are doing actually. It seem they have some internal work and just send for candidates who code for them only.