Need to develop a (1) D3.js flexible configurable graphing dashboard app / portal where you can (2) add a list of charts by (3) specifying each remote datasources URL and (4) getting back a JSON or XML result set that will be plotted. The result set will contain all required data for each graph. We like to add graphs by (5) selecting from a menu and (6) positioning them on GUI, and (6) specifying the datasource URL. The dashboard must be (7) responsive. Once all graphs are added, (8) you can freeze it and (9) save a config file (as xml or json) for later (9) recall (by reloading file). All data from graphs can also (10) be viewed as a grid. This will be the only the first phase of the project. Please bid for such flexible graph app.
4 freelancers are bidding on average $662 for this job
This looks like very similar to what I had play-around an API by Guardian. Based on the requirements, on top of D3, it needs server-side coding to serialize data back and forth to config file.