I applied online. The process took 2 weeks. I interviewed at MuleSoft (San Francisco, CA) in Aug 2015
Interview
Arduous process; 5-6 rounds. Build a lot of momentum leading into the final rounds, only to not have much time in person. They seem rushed. Just be as candid as possible because they sift out any BS. Lastly, the team members in the early rounds really want to help you succeed, so ask them as many questions as possible.