Add new functions to a Wordpress theme

Need an advanced wordpress developer to add new functions to this theme -- > https://smartdemowp.com/reveal/map-style/

I want to use that wordpress theme to display a directory of shipping companies, and need some new functions to do so.

- Add "buttons" to the map that can hide and display categories

- Add the ability to associate world regions with the shipping companies that operate in those regions

- Add the ability to search in a region and find the shipping companies that work in that region

- Add the ability to save the shipping companies that transport cargo from one region to another region

- Add the ability to enter an origin point and a destination and search for shipping companies that transport cargo between those points.

You as a developer will need to be familiar with how to integrate all necessary technology; Google Maps or an equivalent, geofencing, database creation, etc.

This will be a minimum viable product so speed and efficiency is most important.

Let's talk about the logic of how everything would work so that we can begin as soon as possible.

I am ready to start this project now.