Yahoo Principal Software Engineer interview questions

Initial phone screen Followed by onsites onsites had 5 45 minutes interview.

Interview consists of first round telephonic just general discussion and some easy technical stuff. After that they said to me there will another telephonic round it was schedule and suddenly HR called me that now there will be no telephonic round direct face to face. It was schedule next day itself. Face to face I faced three rounds all technical and each one told me to wait. After third round HR came and told me that now Hiring Manager will talk to you he will accompany you for lunch and there it self he will discuss. I waited almost 1.5 hour to turn up but no one came it was almost 3:00 PM and finally I call HR, he told me that Hiring Manger will talk you in evening as he is busy and I can go for the day. But till then I am still waiting for his call. There is not at all professionalism in the process they treat the person coming there as a dog. After taking interview from 9:00 AM to 1:30 PM continuously they even have courtesy to ask for tea/coffer not even water.