first round is basically machine coding round in which they ask me to implement transaction management system i have to build and test the api of user creation , add transaction , update transaction and delete transaction they say to add any database and connect to any language and taking help from ai is allow

i implemented it in c++ and design all the api and use in memory database and call api as method call but interviewer and in between the interview he also asked question abount concurency and deadlock and something system design and edge case question

Tips: ready to implement and build production grade sytem in machine coding round with the help of ai if ai is allow to use