I applied through a recruiter. The process took 4 weeks. I interviewed at MongoDB (New York, NY) in June 2019
Interview
3 rounds of interviews: a simple half hour long phone conversation with recruiter, a hour long video conference with an engineer from the team which was a fairly casual technical interview, and the final round was about a 5 hour long in person interview with multiple people and was technical
Interview questions [1]
Question 1
What was an interesting engineering solution to a difficult problem you came up with for a project? (Wasn't worded this way, but this was roughly the question)