1st round: few basic Java questions & code to merge 2 arrays. 2nd round: Design Car Parkinglot system & seems interviewer was not sure what he wanted to see & agreed to make it monolithic. Then he asked me to design URL Shortener & for that too he agreed for monolithic. He didn't ask any question for any design. 3rd round: The Director was also about to ask for Car Parking system & I told him that same question was asked in previous round. So he asked me to show the same & explain what it is doing. Then he asked questions it is not having pricing. Design its DB schema. Then how will I be able to provide him the profit report via my design. He said that my design is not able to handle the concurrent requests, it is not microservice based but a monolith & that is bad. Fun fact:- These people expect you to design a good microservices based application within 30 mins, but they would have designed bad monolithic ways after wasting many days & now looking someone to clean that m*ss without accepting their fault.