HubSpot is very fast paced and extremely agile, which results in a high level of ambiguity and change. A priority today might change completely by next week, and the more resourceful and flexible you can be, the better. Also, since HubSpot promotes a lot from within, first time managers are common. You'll have to be comfortable articulating how you liked to be managed and offering as much guidance to your new manager as you'd receive from them.