The first interview is the technical interview. The project leader just introduces their task and vision and asked some questions about my compiler project and C++ knowledge. In the compiler part, he mainly focused on the optimization part and asked some questions about how I achieved the optimization methods in my compiler.

Interviewer asks you questions regarding your cv and some technical questions. Mostly checking whether you have the experience regarding the field. Some questions can go quite in-depths as well. It's around an hour long, then they would tell you your result within a week or two.