Found therough charlotte.craigslist.org.
First is a phone screen, consisting of some discussion regarding your skills and background, should run 15 min to 30 min, followed by an overview of the technical operatin environment at SocialServe.com This will run 15 min to 30 min. There will be some technical questions, on networking and Linux systems. If you are interested in continuing, you will be given a sample task, involving shell scripting. This will be time limited, and must be returned in the three hour start to finish window.
Expect to be stressing technical skills, cultural fit, on site support, and a social good component.
Add in additional hats and experience, and you should be good to go.