The interview process was fairly simple.
The first interview is a 30minute phone interview about your background, resume, and interest in Quicken, just to make sure you would fit into their culture.
The second interview is really just an extended version of the first one. However, they go much further into the specifics about the job, and make sure that you are willing to commit the large amount of time you will be expected to commit to Quicken. This interview lasts about an hour.
The third interview was an in-person interview with one of the hiring managers. He was very cool, very laid back, but also very passionate about Quicken Loans and the competitive culture that exists. After what felt like a regular conversation for about 30 minutes, he took me out onto the banking floor to get a first hand perspective about what working there might be like. The purchase bankers are very friendly, and the culture in there is truly amazing! It is, however, just a call-center on steroids.
The interview process is truly stress free, just have an idea of why you are interested in working at Quicken, and avoid talking about them being ranked as a top place to work too much (THAT'S TOO OBVIOUS).