Dear sir.
I have rich experience with Gamera Plugin, Yahoo Plugin etc/
you can check my previous work history.
My strong skills includes as follow.
+ iOS 7,8 development(iPhone & iPad) + Swift;
+ Android 2.3 - 5.1 development;
+ GPS, Google Map, Location Tracking
+ Front end and Back end for mobile services on PHP, .Net, Parse;
+ Payment Gateway(Stripe, Paypal, Braintree)
+ Social Networking (Facebook, Twitter, LinkedIn)
+ Github, Bitbucket
+ XMPP, Openfire, Ejabberd
+ Social Networking API - Facebook, Twitter, LinkedIn, Youtube API
My communication and working time will be flexible to meet your requirement.
If you need a good and high quality mobile application, I'm glad to help you.
Regards.