Total Interview takes more than 3 weeks of time. Total 6 technical round of interview, followed by the interview with the head of the department.  All interview rounds are technical except final one. After clearing all rounds of interviews, they have not processed for the offer. HR was pathetic, they even not reply to your mail and do not update to you once interview over. Unprofessional interview process. They even don't care about the giving justified feedback to the candidate.   Looks like they are searching for the candidate with lesser salary expectation.