HM Call - 1. To understand past projects, scale, high level knowledge, etc. 2. Pretty straightforward. Machine Coding Round - 1. Did not involve any technical questions. 2. They seem to just ask simple questions around abstractions, code extendability, etc. 3. Few subjective questions on different scenarios such as using a cache, security tool, etc. HLD Round - 1. I was told this would be a HLD round but turned out to be a machine coding round. 2. Design a inmemory ledger kind of a system that can debit, credit amount. Add extensions with interface / abstraction for reserve balance, etc.