The interview process was very nice, with four rounds.

Round one: Discussion with the hiring manager. Round two: Architecture designing. Round three: Monitoring solution design and architecture. Round four: Coding round.

I feel all the interviews went very well. After these rounds, I haven't received any call from HR. I waited for a week and then called HR, but they didn't answer. I sent an email requesting feedback to both HR contacts who reached out and waited another week. I called HR again; this time, they picked up but didn't have my feedback. They said they would call me back in a few minutes but never did.

How do you design a messaging solution between two clients? Explain the architecture.

How do you implement a monitoring solution for a multi-tier architecture application?