Pros
you can play a part in growing a company, bring in your ideas, develop your respective functions, i.e. learn a lot "on the go" by thinking things through, and actually implement / do them, and do all that with a multinational, diverse and fun group of smart people. it's also "intellectually challenging and rigorous", i.e. you should enjoy solving problems and build arguments based on facts and reason, not on "oh, I've done that before". the remote work policy also is a plus - one week per month in the office, everyone at the same time, and three from wherever, allow for a good mix.
Cons
at the same time, the company is quite "mature" when it comes to governance (owed to the fact, that it's a regulated entity and owned by a large insurance company) - which makes it feel more "corporate" than you might expect from a company that size. can be intense, as workload tends to come in peaks and troughs, bcs. of external dependencies.