I filled out the application on their website and got a call for an initial phone interview.

The call was with a current developer at Epic, and it was pretty relaxed and informal.

We just verified some of the information on my resume and then talked about a project of my choosing from the resume.

He then asked some follow-up questions about the project (likes, dislikes, problems, etc.).

A big focus seemed to be on the teamwork aspect of my work, so I would recommend discussing a project where you worked in a group.

I heard back that they want me to do the technical interview.

Pick a project from your resume and tell me about it, as well as some of the difficulties that arose while completing that project.