Airbnb Software Engineer Internship interview questions

The first round is a technical phone interview with no resume or background check. I failed at this first round so there's no follow up. There's no hr introductory call.

I was contacted by a recruiter to go to a networking event for my university, then I completed the HackerRank coding challenge, which was pretty straightforward. After that, I had a 15 min call with an engineer to talk through my solution. He asked me to walk through my code and if I would change anything about it. After that, two back-to-back 45 minute technical phone interviews via CoderPad.