Round 1 [DS Algo Round] :

1. Array based question - find valley elements in the array.
2. Discussion on microservices and architecture

Round 2 [Design Round]:

Design IRCTC system considering traffic and scalability required. Discussed on FE optimizations as well.

Round 3 [HM round]:

For starters he was very rude. Discussed system design bottlenecks and how to resolve them. He wanted solutions that he has faced and solved before, any new solutions were not accepted.

After the call, HR immediately called me and informed that I was selected. I shared documents with her that she wanted for the offer.

After 3 days she called again and said there was some miscommunication and we are sorry we cannot proceed with the offer.

This was very unprofessional and I am not applying to Ola in future for sure.