Pros
Despite nearly doubling their workforce while I was there, Bison remains a very lean company with little room for residual talent. This means that every Bison employee is trusted with significant responsibility, in all departments, and given the freedom (within reason) to complete tasks with a fair degree of creative autonomy. You will not be micromanaged, you will not be pigeonholed to a few routine assignments, you will not get bored at 3 p.m. everyday.
This is a hungry company that diligently identifies culture/role fit during the hiring process and trusts their employees to be dedicated to the same vision and future outlined by management. If you're looking for "1 year until Associate, 2 years until Senior Associate, 4 years until VP, etc..." look elsewhere. Sure, the climb is less defined, but you're treated like a Partner on day 1.
Cons
In my opinion, we spent a frustrating amount of time on ill advised sales techniques with gelatinous messaging. In an effort to innovate and attack product market fit, we fell into gray area value propositions with unthought out angles. Disclaimer: This is not the case today but I would be wary about decision making that can feel like blind darts.
