Pros
HubSpot has an unrivaled vibrant and dynamic culture that is at the core of everything they do. Working with incredibly smart, driven, and passionate people who genuinely enjoy being at work, doing what they do is a dream come true. The HubSpot way is to be constantly improving. From executives to directors to managers, everyone is very open to constructive criticism and feedback. They understand that there is always room to get better and they are willing to do what it takes to get there, and make sure everyone else is along for the ride too. The benefits are great. The unlimited vacation is real and the added perks are a nice bonus, but the real benefit to working at HubSpot is the caliber of the peers that you have working alongside you. They are scrupulous in their hiring process and make no exceptions for people that won't fit into the culture of the company and the team they are joining and it makes all the difference in the world.
Cons
Expectations are high. Getting started can feel like a bit of a sink or swim situation. And, staying in the office late is the norm. BUT, the interview process is pretty transparent so it really shouldn't come as a surprise.