I got a phone interview with one of the developers after submitting my resume through their website. He had me code on Stypi. Overall, it was a pretty straightforward pleasant experience.

Dropped off resume at career fair, got an email from HR with a big "Congratulations!" which asks me for availability for technical interviews. I get a phone call from a backend engineer. Very technical (isn't interested in talking about resume/experience) goes straight to questions after some of my questions. Oh, they also provided a stypi link for both of the interviews. LCA of tree & Reverse a string. Cool. I land the second interview. This guy is also not very interested about talking about stuff, he'd rather just go to the technical questions. My memory is vague but it was substrings and deep copying a graph. I ran out of time and wasn't able to think quickly enough. Haven't gotten a rejection yet, it's been more than a week.