I worked at Firstborn full-time
The biggest pro is by far the people. Everyone cares so much about the work and each other, and it's truly different from every other agency I've worked at. There's a hierarchy, in a good way, but everyone is important no matter their title.
The hours can be long, but it's often by choice—someone wants to get each pixel exactly right or put in the extra hours to make something perfect.
Advice to Management
Keep the culture, but don't force it. Just keep being yourselves, and the culture and great work will follow.
I applied online. The process took 2 weeks. I interviewed at Firstborn (New York, NY).
I applied online through the careers section on the company website and was contacted by a recruiter less than a week later. We scheduled an interview and the following week I came into the Lower Manhattan office space in the AT&T building. Everyone was very nice and hospitable and I was given a brief tour of the space. I first spoke with the Director of Business Planning followed by the SVP. All in all the interview process took 2.5 weeks.