I'm also the author of the Apress book Beginning Django E-Commerce.
AppFolio offers a SaaS-based property management platform. I did not work on the core product, but instead joined the marketing department as a web developer for the websites they used for marketing purposes. I developed and extended these sites, as well as developing custom solutions for the marketing department in their sales pipelines in Marketo and Sales Force.
For a complete list of stuff I've been coding lately, see my Github page. Here are a few projects that I'd like to showcase.