Pros
AdRoll is a company that is quickly evolving from a scrappy team of about one dozen when I joined, to nearly 100 today. Leadership team was very understanding about time off for my wedding and later on paternity leave when I needed it. The culture is strong- AdRollers like spending time outside the office (bbq, happy hours, skiing, etc). New sales employees always comment that the training program is a great balance between learning what you need and getting to work right away.
Cons
Growth always brings change. AdRoll is growing so quickly that it is sometimes hard to stay in the loop with changes in other departments, moving seats to make room new hires, etc - but you always know why a change is happening because leadership is transparent about whatever new plan is being put in place and all employees are welcome to ask questions about what's going on.