Hi,
Your project description does not tell much about the app. But if it is just the push notification that needs setting up, I am definitely up for it. If it is more than that, I am confident about handling that too, but I will need to know a little more about the app first, and obviously, both my bid amount as well as my timeframe could possibly change once I know more. About the push notification, what server stack are you using? Do let me know.
Thanks.