First got a call from hr about scheduling the interview.. completing 2 round of technical interview , few basic to advance oops and wpf questions , couple of coding questions with couple of problems solving ...followed by manager round .. disappointing and unprofessional behaviour from Hr started from here .. after manager round i tried many call with text followed by dropping mail to HR about knowing feedback of interview but they didn't reply over mail nor call.. feel really bad with the behaviour from HR .. feel like untrained unprofessional HR working over ... It will impact the name of company..

Not tough but one should be prepared for this kind of Interview process. Round 1: DSA, Problem solving. Round 2: System Design Manager Round, Director Round, Followed by a HR discussion. Depends on the team, mostly this is the process.