Detailed questioning starting from basic understanding of memory allocation to concurrency patterns and practical examples of code with subtle bugs. Competence of interviewer is quite high, length of interview is about hour and a half.

A bit long process (but that maybe it's just me): initial interview, English language check, technical and HR interview, project interview, client interview preparation, client interview. That can be frustrating a bit and takes time but there is a reason for such process, I understand that