I had the screening interview in late Jun by a HR person. It took about 15 min, consisting of mainly background questions (like work experience), with three very simple technical questions. After one or two days I was notified about the time and date o the second interview. The second session was a phone interview in middle July by a hiring manager. It took about 30 min, consisting entirely of technical questions. It was not difficult but did require some preparation. On the second day I was told that they would invite me for an on-site interview. The on-site interview was in late July. I had four or five 30 min to 45 min talks, each with one or two persons. There were a lot of behavioral interview questions. I wouldn't say the questions were difficult, but the interviews were intensive, especially the on-site session. All interviewers were very nice, however.