Android: Notification Manager for chat app

ClanPlay is a messaging app for mobile gamers. We are looking for a talented freelance developer who can develop a Notification manager with logic, what and how to display smart notification on an android device. like the notifications of whatsapp messenger app . NO UI NEEDED, only Android library development I would like to develop an independent Notification Manager. notification manager (android lib) milestone 1: 1. create an android lib 2. create an Init function to setup 3. define structure of objetcs with notification data (text/image, chatid, type(text/image), sender name, isMute, time), used by this library. 4. the manager has an abstract method it calls to receive the object defined in step 3, with a list of new messages data 5. Logic (for this phase): show up to 6 messages on a notification, 6. play a default system sound 7. use a const parameters for notification, so new notification will overwrite the old one from the same app 8. clicking on the notification will open the application main activity. (if you need data, set it in the init function) 9. in order to test the functionality of the library, create a simple UI with buttons so you can load objects to see notifications. milestone 2: 1. add an AlarmClock to call every interval set in the init function to check for new data and show a notification. 2. if we have messages from more than one chatid, we will see the last 6 messages according to the order 3. if we have more than 6 diff chatids in the list, we will see 1 message from each chatid in the list 4. if isMute for all messages, dont play default sound. 5. if all messages in notification from the same chatid, clicking on the notification will start the chat activity with the chatid as a parameter 6. if messages are from several diff chatids, click on the notification will open the main activity. 7. if there is only one message, and the message is an image, show the image on the notification. 8. if there are more than one message, and one or more of the messages are image, put "image" text in the list