Chris Olah is a member and director of hacklab.to and a “20 under 20″ Thiel Fellow, passionate about Mathematics and 3D printing. He’s been involved in a number of open source projects around 3D printing (including designing a RepRap variant) and has spoken at conferences ranging from NYC Maker Faire to Singularity Summit.
You can see Chris’ programming projects on GitHub, including ImplicitCAD (his main project, a programmatic CAD tool), and a few neat proof of concept Haskell projects. You can also find his writing at his personal blog, the RepRap blog, his notes on Byron Sonne’s trial, and his GitHub essays repository - he’s also published a paper, Producing Lenses With 3D Printers, in the Open Hardware Journal. His 3D projects are mostly on thingiverse (including a 3D-printable vacuum cleaner).