I found the job online and applied. Had nearly forgotten about it when I got an email almost 8 weeks later asking for more information and writing samples. Then they set up a phone interview and an editing test.
The phone interview asked for more context about some of the portfolio I had submitted, and past experience. Most of it was behavioral questions about conflicts during group work.
I was then invited to their company HQ to interview in person. It was a series of interviews, typically with a few interviewers, and a couple 1 on 1 interviews and demonstrations. Most questions were about how I worked with groups, and how I approached learning new things.