They have sent me several questions, all of them could be answered by my CV which they didn't read. I answered them immediately. After a week they got back to me to ask me to answer the questions, and I told them I have already answered. They invited me to an interview. The interviewer was 20 min late! They asked me questions about the features of the latest update to C#, which was irrelevant to the position. The product they develop is a legacy "black box", without documentation, failed to deliver with two different teams. The interview concluded well, they seemed happy. After all of this they gosted me.