First Round HR asked 10 list of question on the Call, if we give correct answers then they will arrange next round.
Second Round with Solution Architect, he asked more about core concepts like
how flutter internally works,
whats are the challenges you found in development,
Method Channels,
Different Types of state management,
then he given a programming (anagram) we need to write a code in core level without using any pre built methods
Third round with CTO, he asked how do you convey flutter is best technology for client and given a use case and asked me to implement, i done it
Fourth HR round, HR will ask you some formal questions, where do you want to see in next 3 years, why should we hire you,
finally they offered me good package,
thanks team for smooth and fast process.