Thanks for your posting.
I have rich experience in Dating app, Chat app, Web based mobile application developing by using XMPP, RTMP protocol, Restful WebService, MapKit, JSON Data Encoding/Decoding and Backend APIs.
I have developed some good applications and love to work on this kinds of jobs.
I can provide both of Backend API and Applications.
Since I have strong background and skills, I am sure I can complete your project successfully.
I hope to meet you on skype to discuss more details.
I would look forward to hearing from you.
Kind regards.
Wang Ping