Pros
The core of the main product is a top-200 open-source project on GitHub. It's great to have an impact on the open source world on a daily basis! The team is excellent, there's so much to learn from others in the team. There's a great culture of learning from each other in the company, with weekly demos and regular hackathons. The throughput is is remarkable, and there is a great balance between getting rid of technical depth and working on new features. The organization is transparent and flexible, with lots of freedom to choose your work-style. The team is quite international and located in lots of different time zones, which is facilitated by the inclusive and remote-friendly environment (async communication setup, alternating times for the ceremonies,...). Last but not least: The prospect of the company is awesome, and the perks are great!
Cons
I can't really name a contra. The responsive management at eye level helps in bringing up and actually addressing issues fast (technical, but more importantly organization-wise).