The overall process took a whole month. The company HR reached out and asked basic HR questions. It was followed by a two days coding challenge where you are asked to create a simple REST APIs and show transaction statistics. I think the hidden idea was to achieve the goal in O(1) which I did. The third round (the most interesting round) was technical interview with two guys. It was a friendly conversation which I used to had with my ex-principal engineer in my previous company. We talked about high level architecture, design patterns, production challenges, code reviews and some of my unconventional approach to software development. It also included a 10 min live coding challenge which was an average level question. In total they gauged my overall technical standing. The forth round was with a manager where we talked about technologies, devops pipeline, psychological analysis and how my first few months would look like if I join the company. And finally the fifth round was with the HR where I was offered the job.