The process started with a phone screen interview. A couple of weeks after this, I received positive feedback, and Google decided to fly me to Zurich for in-person interviews. There, I had four one-to-one technical interviews and one informal lunch interview. All of the interviewers were software engineers from different project groups. All the questions were challenging algorithms questions, focusing on different topics such as graphs, trees, and similar other data structures. Though I wasn't able to get an offer, my overall experience was awesome.

4 algorithm questions, each with different focuses.