Pros
Identifying a more efficient and convenient way for people to receive and order their groceries is a great concept. There are many people who can and do benefit from this business model. Working with people who want to get stuff done in a fast paced environment forces you to think on your feet. You're really pushing yourself to just go and figure it out later. Good pay.
Cons
Highly reactive environment filled with leaders and managers who either don't really care about leading and managing, or haven't been trained. Or both. Lack of culture and constantly being biased towards action can be challenging when other startups out there are boasting the same perks and career opportunities (but are doing it better). Poor choices made by supposedly some of the more tenured members of leadership are questionable.