I applied through an employee referral. The process took 7 weeks. I interviewed at Braintree (Chicago, IL) in Feb 2016
Interview
Brief phone call with recruiter followed up by an hour interview with members of the development team asking various technical questions. This was followed up by a coding challenge where you were asked to build a simple webapp. I didn't get beyond the code review so don't know if any other steps remain.
Interview questions [1]
Question 1
Basically went over my resume in detail and asked a series of technical questions based off that.