Publish my Hybrid App in Google Play and App Store

I am looking for a freelancer to help me publish my Flutter hybrid app in both Google Play and App Store.

Skills and Experience:
- Proficient in Flutter framework
- Experience with publishing apps on both Google Play and App Store
- Familiarity with the app launch process on both platforms

Requirements:
- Publish the app in Google Play and App Store
- Ensure that the app is properly prepared for launch on both platforms

Additional Information:
- I have already set up an account for both Google Play and App Store
- I may require some assistance in preparing the app for launch, but I am not sure about the extent of the help needed.


App technology = Flutter
Admin panel = React.js
API = Node.js
Database = MongoDB