Daniel Greenfeld works as a freelance consultant doing Django and Python work for Cartwheel LLC and sometimes for Revolution Systems and Eldarion.com. Working with Holdenweb, LLC he helps author a series of classes on Python 3 for the O'Reilly School of Technology.

He is also a contributor to Pinax, has done a lot of work in the field of usability, and is a co-creator of Django Packages.