I would like to hire a Javascript Developer

I have a need to customize the jsonld-vis available at GitHub. They provide an example of javascript that reads a file and plot a graph on the screen. The javascript reads a fixed file but I would like to transform the example in order to have a form that will allow me to submit the file and such file will be used as input to the javascript function, generating the graph. The example also needs to be modified in order to have another page that shows thumbnails of all the generated graphs using such tool. The code is available at [login to view URL]