Pros
Interfolio has managed to build a team of people who love working there. This is the first place I've ever worked where I genuinely enjoy working with all of the other people in the company. The start-up culture is enthusiastic and forward-thinking, and there is a lot of opportunity for professional growth. The team leads encourage initiative and taking chances and you're free to explore new interests and build your skills. Whenever management has made a tough decision like letting someone go, they've been up front about their reasons and made it easy for the rest of the team to ask questions. I trust the leaders implicitly and have yet to see them make a choice I disagree with.
Cons
Interfolio is a growing start-up, so there are a lot of changes in team organization and pivots in the product design, so you have to be adaptable to keep up.