Update of an existing Android POS App

We are looking for an android developer with working knowledge of PHP who can update the source code for an existing android POS app. We plan to publish the app on Google Play. The code is written in Java. Working Knowledge of Android Studio, JAVA, PHP, Android POS Machines, SQLite and PHPMyAdmin is a must. We plan to start the project 3 weeks from now. Please indicate the minimum you would charge for the update and the minimum amount of time you would take to deliver an update.

Indicate "Looped" at the bottom of your bid.

We prefer Freelancers based in Ndola, Kitwe and Lusaka (Country: Zambia).

Thanks.

FM