Looking for GIS/GitHub Expert

My firm (National Demographics, Inc) is looking for someone both knowledgeable with GIS and familiar with GitHub to help us modify and use a GitHub-posted program (for an online GIS mapping tool) for a company project.

We seek a consultant to advise us on how hard it would be to modify that tool to achieve our needs, and perhaps to do the modification work for us. GitHub site and program here: https://github.com/districtr/districtr

If interested, please contact Douglas Johnson, djohnson@NDCresearch.com. Thank you.