Started with an email from them, then a quick 10 minute phone call with one of their own recruiters, after which they scheduled a technical phone screen. The technical phone screen lasted about 30 minutes and most of that time was spent writing code in an online text editor. Shortly after the phone screen I was asked to come for an in-person interview. The in-person interview lasted 4-5 hours, where I met with 4 different people one-on-one. Almost everyone had me answer technical questions and write code on a whiteboard. Afterwards their recruiter told me that they were interested in me, and I left feeling confident that I would receive an offer. (I did not receive offer on the spot). The only thing I did not like was that I sometimes had to sit and wait for a while for the next person to come in, but it wasn't a big deal.