React Native Developer

The client is a startup with a web app and mobile apps. The web app uses React.js/Redux and one of the mobile apps is already implemented with React Native. The experience of the client with the React.js/React Native combination has been very positive and a lot of code could be shared between the web app and the mobile app.
Now the client has one more iOS app (implemented with Objective-C, not Swift) and an Android app, both of which should be migrated to a single React Native App as well. For this task the client is looking for a developer with production experience with React Native (if possible 2+ apps implemented) and either Objective-C or Android/Java.