Exist a plugin for background service like Facebook?


I make an app with ionic and firebase which the user can post messages and all other user receives a notification with this message. I succeed to do this with the firebase event, on child added, and local notification. But if the user kills the app, he didn’t receive notification anymore (until he runs the app again).
So do you know a plugin which able me, to do the same thing in a kind of background service, like Facebook have done.