I was referred in by a friend of a friend. A recruiter contacted me very quickly to set up a phone interview. The phone interview was really great, probably the best experience I've had. Recruiter was super friendly and gave me a LOT of information about the company, specifically about their perks and benefits which was nice. She didn't give me a chance to ask questions but it wasn't really needed since she was so informative. After over a week I had to follow up myself to find out next steps which was a bit annoying. She then assured me that the hiring manager was very interested and wanted to skip a phone interview and bring me right on-site. Awesome! Though my interview ended up first being scheduled 2 weeks away and then being RE-SCHEDULED for another week. The whole process was so extremely slow but luckily they were the only company i was entertaining at the moment so I didn't mind. If you have other offers in the mix with Twitter, it might not be such a great experience for you because I've heard from many people you have to constantly bug them to find basic timeframe information. The on-site interview was a bit exhausting since I was there about 5 hours and talked to six people. They were all pretty nice though some seemed like they wanted to be off doing other things. One interviewer particularly gave some pretty intense questions in a rapid-fire sort of way. Typical for big name start-ups I guess. I was taken to lunch at the end of the interview and felt it went extremely well. After having to attempt to contact SEVERAL people over a time span of two weeks (with no response), I was finally called by the recruiter to tell me I didn't get the job. Disappointing, but mostly just because I felt extremely out-of-the-loop during the process. Twitter's recruiting department really needs to step up! I didn't even get an idea of what to expect timeframe-wise at any point during the process which is just rude, really. Twitter is not the only company in the world - and I kind of got that pretentious vibe from them.