I applied through a recruiter. The process took 6 weeks. I interviewed at Capital One (Washington, DC) in Feb 2018
Interview
Recruiting reached out through LinkedIn. I wasn't looking for a new opportunity at the time but we stayed in contact and I let the recruiter know when I was open to new opportunities. We had a brief phone call about my resume, what I'm looking for, and the interview process. She then scheduled a phone case interview the following week. Like many of the reviews state, the case is highly quantitative and getting the correct answers is extremely important. I passed phone case and am invited to on-site interview day in a few weeks. Pleasant experience so far.
Recruiter Call, Mini Case and then a power day with 2 case studies and 1 product case study. Process was overall smooth. Appropriate documents and resources were provided to prep for the interview.
The interview was based on 3 phases. First was screening on call then a video interview with mini case then a power day with 3 phases including product interview, case based and economics based.
First, Screening call: the HR simply walked you thru the interview process and schedule the next round of interview - mini-case. I haven't done the mini case yet. Mini case, just search online for potential cases and prepare for it.