Pros
You'll work with some of the smartest people you've ever met, both internally and externally. Polyglots, ML and AI engineers, language researchers and translation professionals - all intelligent and driven people who are kind to boot. Also, in my experience, there's a lot of trust as long as you get sh*t done and hold yourself to a standard. The company is ambitious so it's not a "minimum effort" kinda ride. More recently, there's been a whole host of very experienced people both within, and being brought in to, the business - and their voices are being amplified, which is a large part of the direction trend. Pay is decent and progression can be had, although can be dependent on your areas' structure and who you sit under; make sure it aligns with your personal goals and the progression is there if you want it.
Cons
There has been a period of change, and the ripples are still settling; but the intentions are good and getting better all the time. It's a company in it's late teenage years - it's learned some lessons and gone through the growing pains, just don't expect everything to be 100% ironed out. An example is that documentation can still be lacking due to the rapid growth, but an open culture makes up for it. Be prepared to build a boat as you sail on it, and just speak to others.