I worked for a mobile company from 2000-2006, doing just what you're talking about. There was a web aspect to signing up and such, a DB, lots of Java on the backend and HTML/JSP on the frontend. And I was the Lead Engineer for all the consulting projects. I have a computer engineering degree from Carnegie Mellon, and 15 yrs. experience (about 9 with Java/JSP/Servlets/RDBMS).
So I think I'd be well qualified, and I'm not asking for much money either.