Hi, sir.
I've just read your job description.
I have developed iOS apps as well as Android apps.
I can also develop Blackberry and Windows phone app.
And you said you have web service for this project.
And if you want to develop apps for multi-platform, you can use phonegap.
Using this, you can develop one web app to deploy multi-platforms.
If you'd like to consult your job with me, you can contact to me anytime.
I'm looking forward to work with you.
Thanks for reading.
Sincerely.
Lu.