Pros
Strong product with very clear vectors for growth. Dynamic international team fueled by desire to move fast; growth and innovation is all. Opportunities to learn, own, and deliver are everywhere - yours if you want them. Very sociable, multi-cultural atmosphere. People are extremely passionate about success of their teams. Downtown office with downtown perks; fun office crowd with rich social life - hanging out after work is a norm.
Cons
As a startup, the company is laser focused on growth and disruption of the market; this requires a certain degree of creative chaos and often leaves alignment, structure, and base levels of Maslow's pyramid on the sidelines. There is constant action - if you cannot thrive in a hustle, it will not be an easy gig.