Hello Juliean,
We have read your requirement and checked the links and understand that you want to add two functionalities 1) need custom url which for authentication b) want to wrap a map inside the app.
We are the team of Java developer. our skills include HTML5, CSS3, jquery/javascript, eclipse, rest api, java,maven etc..
We can provide you a Java developer who can work on these functionalities. Let me know if we can discuss this project further. We prefer Skype/IM for faster communication.
Best!
Ruchi