Development of a web application for booking appointments

I will commission the development of a web application for booking appointments and managing them. Importantly, it is to be a dedicated system by design, focused on further development. This means that it cannot be Wordpress + dedicated plugin.

UI/UX based on sketches provided by the client.

Below are the general assumptions of how the system will work, of course, to be further refined (along with providing login credentials for sample sites):

The system is to consist of two components:

1. the "Backend", where service providers log in and where there is, among other things:

1. calendar / list with available visits,

2. possibility to add new visits

3. possibility of editing visits

4. settings of visits (handlers, types, etc.)

2. front-end - a page where any users will be able to book a visit.

Please contact me if you have the experience to complete such a project along with a portfolio including web applications.