I went through the interview process twice actually, and both times it entailed a brief phone call with the recruiter, a half hour phone interview with a member or two from the team, an in person interview with four team members for a half hour each, and then one final video chat with another team member.

This was by far one of the best interview experiences that I've ever had. The recruiter was kind, helpful, and always available to answer my questions. After my phone screen, I had a phone interview with one of the hiring managers, and then two round of in-person interviews. The process was seamless, and even fun. The team itself was also top-notch. At the end of the day I was told that my feedback was all positive, but the hiring manager chose to hire someone else based on preference. I truly appreciate that they were willing to provide feedback. I would consider interviewing for another opportunity at twitter simply based on their recruiting process.