Pros
I love the fast-paced and exciting environment and the fact that I get to work with a great team and brilliant people throughout the business. The base salaries are good and they offer great benefits (30 days annual leave, free deliveroo, etc.)
A lot of complaints in other reviews are about the work-life balance and to be honest it can vary quite a bit depending on departments and individual teams. In my department the work-life balance is very good, in fact it's better than at other companies I've worked at before.
The culture of never settling and always striving to be better aligns closely with my personal values, therefore it's a plus for me. However, if your biggest ambition in life is to be home in front of the TV by 6 pm every day, it might admittedly not be for you. I think people need to be aware what working for a start-up is really like before joining with false expectations.
Cons
Communication from (senior) management can be less than ideal, some decisions (mostly around internal processes) don't seem to be well thought through.