One approximately four hour interview, with 1-on-1 sessions with 3 engineers and the hiring manager. The overall process was pleasant and the questions were relatively easy. Salary and benefits negotiation is straight forward, as there were not a lot of room for it.

Applied on-line, and was contacted about 2 weeks later. First 1 hour HR interview (standard HR questions: strengths/weaknesses, why Synopsys, why you, etc.), then 1 hour interview with a hiring manager. Then, on-site interview (~5 hours: 4 x 1 hour 1:1 or 1:2 meetings). Then, 3 x 1 hour phone interviews with senior R&D people. Finally, one more quick HR interview. A bit of a wringer, but overall a very positive process, as everyone was very friendly, helpful, and interesting to talk to. No complaints.