I applied online. The process took 6 weeks. I interviewed at Rover.com (Seattle, WA) in Sept 2018
Interview
The best thing was the response time: I never waited more than two or three business days before hearing back about next steps. Compared to the other companies I was interviewing with, that was fantastic. Rover respected my time.
There was an "analytics exam" to do over a weekend, two phone screens, and a four-hour onsite interview with four pairs of interviewers.