When a new software development technology or programming language is introduced, it takes a long time before it becomes mainstream, particularly considering the horde of technologies and languages that we have presently.
This does not apply to Flutter though. With only three years in the market, it can still be classified as early. Yet, it has gone mainstream, even edging out big-time competitors such as React Native and Xamarin. One could say its rapid growth is because it is an open-source technology backed by Google. But it is not so simple.
There is a gap in skilled developers for Flutter. This has been made complicated by the fact that although Flutter uses legacy programming languages such as C and C++, its main language is Dart, a new language purposely developed for Flutter. Hence, most developers have not caught on to the wave yet.
For an employer, this might be a complex situation. However, you can still hire the best and most suitable Flutter developers for your project by asking the right questions.