Hi there, my name is Maku. I haven't done exact sample like your project but I've done similar project, in terms of technical 3D workflow that will be used.
This is the contest that I've won that has similar animation:
https://www.freelancer.com/contest/Data-Visualization-993611.html
The result in this project is not final animation. The final animation is more complicated. And it's been played in conference in Las Vegas as my client's presentation.
After I won this contest, I was hired as contractor for the company. The name is RealPage Inc. Mostly, I do 3D motion graphic animation works. Similar with your project.
I live in country with GMT+7 area. I will be available from 5AM - 11PM