iOS app development with react native

I want to make the app with react native for cross-platform.
I have already an app with swift for ios app.
We could develop an android app with flutter but it needs more work to extend the app.
So I have decided to make a new app with react native.
I want to find a developer who understands the swift code and changes this with react native.
Also, I want to add some functions to this app.