Most dis-organized interview process. I applied to position located at NY. I did not want to work at any other location. At NY they work mainly on Geo platform. 1) Recruiter replied through linkedin and then spoke on phone 2) A phone interview was conducted. which was to apply map-reduce concept to solve a big-data problem. 2-days later they said I cleared that and they want 2nd phone interview 3) 2nd phone interview was arranged 10 days after the first. Hiring manager was supposed to call but he did not call. So they arranged the interview 10 days after that date. The hiring manager called on time 2nd time. He asked some basic coding questions related to arrays and also questions about work and about twitter 3) 2 days after the 2nd phone interview they said they want 3rd phone interview. I said yes. They arranged the 3rd phone interview after a week. 3 days before the 3rd phone interview I got an offer from a company and both work and pay is good and I liked the team mates. I lost motivation for the 3 rd phone interview. 4) 3rd phone interview was about printing matrix diagnolly. It was not tough but I did not have motivation and took more time than required. The process takes lot of time. If your dream company is twitter and you don't have problem waiting for the process which can take more than 2 months then you can attend. Otherwise they drain you with multiple rounds of interviews and also they miss the interviews and they reschedule multiple times. I liked twitter but I got an equivalent offer both in terms of work and offer from a hot startup at NY.