Pros
It's disappointing to read some of the other reviews here, but also misleading. True, the company has had a lot of interns in the past - like any company with a presence in France. Universities there require 6 month internships as part of a degree, so the French co-founders actively participate in the top universities and support students with internships in both our Paris and SF offices. Many have made amazing contributions - as with our full-time employees, interns can take on as much responsibility as they want, getting access to people, information, operational insight about companies, etc that would never be possible in a huge company.
That being said, if you've never worked in a startup before (and/or this is your first "real world" job), it can be overwhelming. Yes, we work hard, but we play hard too. And yes, because internships are for 6 month periods according to the university curriculum, there's turnover.
Personally, I love the team, company culture, and most of all the startup spirit. If you want to be part of a team and have immediate and significant impact, and part of a tech company that will disrupt an industry and be really successful, this is the place!
Cons
Communication between teams can be confusing or disorganized, but this is improving. Less flashy/wasteful than some startups in terms of posh office furniture or luxe perks (unlimited PTO, free food - yes, but in-office massages for engineers, 10k for your dream computer etc - not so much).