Just listened to David Ing's talk. He's the Chief Software Architect at Meridian Project Systems.

It was pretty dense. He warned us beforehand, though:

This talk is 2 years of design decisions into 45 minutes. So that's like: Lord of the Rings = 'Short guy given ring: decides to throw it into a Volcano'

I kind of wish that his talk had been longer, as it would have given him more time to go into things in detail. As it was, though, it was still an interesting look into problems his company faced and how they solved them.