Not a pleasant experience because they lack professionalism.
Overall I had 8 rounds (including HR round) before they decided to not take my application forward.
I had 3 technical rounds on the first day overlapping with lunch hours and they had not accounted for it. Next day, I was given a feedback that they wanted someone more technical and they don't want to take my application forward. I was fine with it but I got a call again within 1 week later stating they were considering my profile for a techno functional role. I clearly told them I wasn't looking for a technical architect kind of role and they ensured it was a techno functional profile. In the next 2 rounds I was asked questions on agile and people management.
On the third day they set up 3 rounds - Round 1 with executive director, round 2 with managing director and round 3 with HR. The interview with ED was at 12:30 followed by MD interview at 1:30 and HR round at 2. HR called me at 12:30 to inform that the ED would be delayed and he would be available only at 2 for the round so they had requested the MD to talk to me at 1. I was waiting for the MD round and when I did not get the call I called up HR. I was then told that MD is not available before 1:30. At 1:30 the MD called me and chatted for 30 mins which went fairly well. ED came at 2 and asked a few technical and Scrum/ Agile implementation questions. I was able to answer most of them. I then had my HR round at 3 and was done by 3:30 after which I had my lunch.
I did not hear from HR for a couple of days and then I got a mail stating they decided to not take my application forward.
Regardless of the offer, I would have appreciated the entire experience if
1. They had slotted my lunch time in the schedule considering their interviews don't start before 12
2. Their interviewers had respected my time
3. They had provided concrete reasons for why they decided to not take my application forward
Interview experience matters a lot and I really hope they take care of it.
I would not recommend anyone to go beyond 3 rounds if they see this pattern.