Shopify Location Coordinate Selector App For Customizing Products

We are currently looking for someone who has developed applications for 3rd party shopify apps before.

The project consists of:
1. embedding google maps and a search field on a product page with functionality allowing a customer to select a location by either:
a) using a search field to bring up the location and coordinates on a map.
b) dragging the map to select the coordinates.

2. Coordinate longitude and latitude should then be extracted from location and passed through the customers Shopify order so that it can be recorded for referencing to customize the customers item ordered.

for example of what we are looking for please see the link in the attached file.