Modify a already developed push notification build in Java spring framework

We need to send a push notification to a mobile app both android and iOS . The push notification code is already developed. We need minor modification to it. The scenario is this-- When we send a message to a patients mobile app the mobile app gets the message through web service but we have developed a push notification which will alert the mobile app user to know that a message has arrived. The code for this is already developed. We require little modification to it for next 2 days. You don't need to develop the push notification as a whole. Push notification is already developed. The requirement is very urgent . I like to close it by today itself. Interested developer will be provided with full code base and database. Requirement- Should be very good in web service and push notifcation Can deploy the code in his own server by building the .jar file with all the dependencies on it Looking forward for your proposal at the earliest