Consisted of a 1 hour HackerRank, 2 back to back technical Skype interviews, and 1 culture fit interview. The HackerRank was pretty challenging and time constrained. I would recommend studying up on algorithms, keeping your composure, and planning out your thought process before typing as fast as you can. The Skype interviews were difficult, but not as impossible as some of the other stories I've read online. To study for this, I would recommend beefing up your knowledge on graph theory and studying traversals / search algorithms. The culture fit interview was a normal, less conversational behavioral interview. For this one, just try and be yourself and prepare like you would for a normal behavioral interview. Definitely doesn't hurt to prepare for questions you'll 100% get like "Why Airbnb?" and "What was your last Airbnb experience? How was it?"