SmartClean Technologies interview question

First round: Previous experience and work done. Questions on data structures, mobile application patterns, push notification, caching, Questions on data structures: Stacks, Queues, LRU cache implementation, tree traversals, hash maps, arrays, set etc. Good questions on push notifications and it's working, how to cache data in mobile apps and the state management patterns like Bloc, Redux etc. Overall interview process took for around 45 minutes and the interviewer was very kind and helping me in thinking in a different way if I got stuck. 2nd Round: Technical interview. (Telephonic) Questions on cloud based platform experience, testing the knowledge on latest technologies and if I have explored, coding problem, flutter related questions. Interview started right on time with brief introduction and ice breaking questions (Previous experience etc). A coding question was asked at the beginning. Questions on Firebase and restful api's . Questions on mobile development strategies. How to handle scenarios when internet is slow or nor available (Connectivity services), Sqlite, shared preferences. Questions on flutter and it's state management techniques, performance, animations etc. Overall the interview was smooth and the interviewer gave enough time for me to think and answer. The interview went on for around an hour. 3rd round: HR round (Telephonic). The interview started with the usual HR questions (Tell me about yourself, hobbies, industry experience etc). Also some managerial questions were asked like how would handle pressure situation etc. The interview went smooth and went on for around 30 - 45 minutes.