Looking for professional JavaScript Programmer with Firebase and Json experience

FOR THIS JOB FIREBASE and JSON KNOWLEDGE IS MANDATORY!

We have created an android app that allows users to send real-time data ( photo + other info ) to firebase and it shows the dynamic data in a web app hosted in GoDaddy. The pie chart we've implemented shows the dynamic data and represents it in 3 categories in three colours ( red, yellow and green ).

1. We are looking for a professional programmer with knowledge in JavaScript and Firebase to add a bar chart in the web app that will represent the total per month of each category mentioned above.

2. The google maps in the web app must show multiple dots ( according to each category status and location ).

Contact me only if you are interested. If conditions and terms are accepted 50% will be paid in advance and the other 50% after completing the work. Your work progress will be checked by our main programmer which will be in touch with everyday.