Pros
Great "techy" culture, treated like an adult/human, trusted to get your work done within the deadlines and no one breathing down your neck, management communication was the best I have ever seen - everyone was kept in the loop regarding what was going on in the company and they were very approachable if you ever had any questions, you can work from home if needs be, brilliant break out areas, amazing supportive teams and easily the best place I have ever worked. A lot of other businesses could learn a lot from Fanduel.
Cons
I can't think of any! Only thing I will say is it would be an idea for team leaders/managers to notice when members of their team are struggling with the workload and intervene before the employee gets to breaking point.