Dear Sir,
I have worked on more than 50 Apps from start to end. I have integrated social media SDKs facebook, twitter, Instagram and etc. I have used latest Lollipop design and also backward compatible for lower API.
In Android have different screen size and I made layouts that fit on all screen sizes.I have more then 5 android phone on which use for testing your App. I would suggest you User Interfaces from Material design which introduce in Lollipop. All exceptions are well handled.I have also worked with Web Services in App. REST and SOP both have hand over the experience.
I have also used Android Studio, eclipse and Visual Studio 2008,2010,2011,2013. I have also deal with Gradle and Maven projects.I have worked on Google APIs, GCM Notification and Android Services.
I have no complaint if you hand over me this job.