Mobile App Optimization - Transportation - Public Service

Recruiting a talented programmer who is able to offer a fair rate to contribute on a free transportation mobile app with +50000 downloads (Android store) that provides a public service, published in IOS and Android stores.

Tasks:

-Optimization for Android and IOS. (Improve visibility, image)
-Google ads, admob. Manage ads and banners, policies.
-Make little programming edits to optimize app.
-Update to be compatible with latest operative systems.
-Check and fix bugs.
-Maintain confidentiality.

Please detail per hour rate, monthly payment or project.

Regards.