Hi.
I am an Android developer with almost 2+ years of experience in Android and 5+ years in Java. I am involved in many Android apps such as a social networking app, a chat app and a sports app. I am very good in doing an SDK for your REST/HTTP calls. Generally, I can make the sdk in an hour using Retrofit/Volley, networking libraries. Well, it is still depends how complex the API is. Also, I have experience with geolocation such as getting the nearby locations/places using haversine formula. I have also previous project with live streaming and VOD service in client-side Android.
I am an expert in doing REST calls in Android. I am well-experience in ordinary REST calls, oAuth, Push Notification, Notification Polling, GCM, and etc. I can also do backend work using Node.JS with sails framework. I can work API for an hour. We can deploy it in AWS EC2.
Here, in you your project, we will be using Retrofit with GSON parsing and also OkHTTP for http client network connection. OkHTTP is very fast and can handle multiple asynchronous requests easily. We can make it a library as what we made in our projects so you can integrate it anytime in many apps without coding again this part.
You can also see my portfolios but some of my Android apps are not included is due to legal purposes but if you want I can send you a private message regarding this. You can also try me through a paid test if you want.
Thank You Very Much! Hoping to work with you soon.