Do you have practical experience implementing and integrating push notifications in applications?

Yes, I have experience implementing push notifications in Flutter applications. Usually, Firebase Cloud Messaging (FCM) is used for this. The process includes:

1. Setting up a project in Firebase and obtaining configuration files.
2. Adding the firebase_messaging package to the Flutter project.
3. Requesting permission from the user to receive notifications.
4. Handling message reception in the app (both in background and foreground).

Example of initialization:

FirebaseMessaging messaging = FirebaseMessaging.instance;

// Request permissions (especially for iOS)
NotificationSettings settings = await messaging.requestPermission();

// Get the token for sending notifications
String? token = await messaging.getToken();

// Handle messages
FirebaseMessaging.onMessage.listen((RemoteMessage message) {
  print('Message received: ${message.messageId}');
});

It is also important to configure the server side for sending notifications via FCM.