I'm Android native application developer. I have had a lot of experience in developing mobile applications for enterprises. I can help you create an Android application from scratch or fix application from your former novice programmers.
I can also help you in developing a web service / API (JSON/XML) for your android application, with PHP & MVC Framework.
Thank you for visiting my profile, please do not hesitate to contact me for just saying hi or talk about your idea, maybe I can give you an enlightenment.