Foreground Features Integration, Android App, Kotlin Language -- 2

I am looking for an adept Android developer to integrate foreground features into a policy renewal application. The key purpose is to display real-time policy renewal information. I expect optimal user-experience enhancement. Required skills include proficiency in creating user authentication, developing push notifications and capturing in-app purchases. Please note, the completion timeline is just one day. Candidates must be able to deliver within this time frame.