Pros
Management, and the owner in particular, dream big which sounds great at first. If you are comfortable with a fast pace and changing priorities, policies, and processes, you will be ok here. Likewise, if you like working hard perpetually, you may also be ok here. If you like working in an office (as opposed to working from home), you will like that aspect of the culture.
Cons
If you are not comfortable with a "building the plane while we fly it" atmosphere, you will find it difficult to be successful at Ark. They have an everything-is-urgent-all-the-time culture. If you value a genuine work/life balance, this is not the best place for you. Management speaks well of culture and employees, but in truth they treat employees as a resource to be used up. The parental leave policy makes it clear they do not want working mothers on the team. If you do not share the conservative Christian values of the owner, it will likely feel difficult to fit in on a cultural level.