30 minute phone screen, where technical questions were asked. Followed up with a request to schedule a panel interview consisting of 5x 45 minute one-on-one interviews. One of these interviewers is going to be your manager (this is last usually), one is a "bar raiser" (sounds like an HR term, they asked behavioral questions not technical questions), and the others are people you will be working with who might be leads or peers or more senior engineers on the team. Some of these can delve into more technical areas, some of these panelists will ask more behavioral questions. Be prepared for both categories. I was a little less prepared for the behavioral questions, although I'm more comfortable speaking extemporaneously on those topics.