The system of issuing numbers for API requests with a web admin panel. Development and support

The main functionality of the system: according to the API request from the client, it gives him numbers for registering the service from the available pool, sends him messages incoming from an external source, calculates the issued numbers, contains tools for managing the system, customer accounts and viewing statistics.
Presumptive core modules:
- API connection with the client, which provides receiving requests for numbers and sending SMS. HTTP, there is protocol documentation
- API connection to the provider, receiving and processing messages. HTTP, there is documentation of the system that sends messages.
- Actual service for processing requests and messages, preferably in node js
- Database
- web administrative panel for system management and statistics display.

The interface for clients is not provided, connection only by API.

TK with a description of the functionality and documentation of the API will be provided upon request.