I applied online. The process took 4 weeks. I interviewed at Trello in Dec 2016
Interview
Much like other experiences listed here: I had 4 interviews, all of which seemed to go really well. A JavaScript test where I successfully completed the task and talked through a solution for the bonus problem, a SQL test where I got through all of the available problems and an application design conversation before talking to the Engineering Manager. Then a rejection.
Interview questions [1]
Question 1
Javascript coding, SQL questions and an application design conversation