Development of APIs for data exchange with third-party applications

Dear programmers, good day.

Looking for someone who will be able to realize the data exchange between the site and third-party applications.
CMS website – wordpress, third-party apps – mobile apps iOS, Android, 1C, custom-written application.

The goal is to make the API through which applications can draw out certain information. To work on third-party applications is not required, you need only to customize the website.

Types of information – online orders (delivery) and booking.

Upon receipt of more detailed TOR may be additional work unrelated to the API.

The website, which will remake, is working on Bitrix, there is fully implemented, all exchanges through the API that I described above (i.e., will have the opportunity to become familiar with the current solution, if it will facilitate your task).

Waiting for your offers with terms and prices.