Hi there, I'm Matt Sergei (do call me Matt, please) and am placing a bid if you don't choose a freelancer before Monday (Aug, 17th) next week.
I have knowledge about 2D (and 3D) graphics and have checked your requirements in the Google document yet currently am working on two other projects. And need to read your document thoroughly over the weekend (when I plan to complete mentioned projects).
Otherwise I'm a webmaster and IT developer for 26 years, and last 7+ years implementing mainly SVG based animations/charts/visualizations where I have to script sometime quadratic and cubic Bezier curves while lines and arcs are (much) easier.
Since I have graduated in digital image processing and thus am versed in multimedia mathematics I believe using it will be easier than for the average engineer.
Regarding programming languages I'm most in javascript (and node.js) now, with less PHP as before. Understand Python and C though don't have to use them regularly (yet they would not cause me problems).
Best Regards and hope you're safe,
Matt