I provide an Asynchronous Web App that uses public APIs, I can dynamically update the UI with user data. 

Using Node.js, I will setup the server & client side code to fetch the wanted data using API url. I also have the ability to create APIs for other services. The data will be stored and transported in JSON format.

As for the user interface, I will combine my skills in HTML5, CSS, and JavaScript in an interactive web application, and use some incredibly common events, methods, and logic.   

I have worked extensively with APIs, the most famous of which was my work with weather API services. As the project was Weather Journal App to know the Temperature by ZIP code.