Wrote a New API
Used React.js
Designed website
Used GraphQL
Used node.js
Used JavaScript
Used MongoDB
Here I developed a system for Carlos Roberto Carrasco Zamudio CEO of DCM Aguascalientes, my stack of technologies was React, MongoDB, and NodeJS with express and GraphQL. This project is used for project management by putting their providers, clients, and materials/products where for each client he can create multiple projects and there put the materials that they are going to use and put limits to the quantities of each material. The data is in real-time, so multiple users can be using the system at the same time and if anyone performs changes, everyone can see them, also has multiple types of users where the admin is the only one who can use all the modules of the system.

You can see the project in action here.