Pros
I have worked at multiple companies, and I would say that Sanofi is by far one of the best places I have worked at. The biggest strength about Sanofi is undoubtedly the people -- I have never been refused help, and people come together to help others complete projects when needed. I also relate to the "play to win" behaviors as part of the company evolution. In addition to the people, I think that the leaders are very approachable and down to earth. There are very little people who are immersed in their titles, and I have always been made to feel important and welcome. The company has great employee resource groups (ERGs) where you can get mentoring and expand beyond your current role. The science is decent, the R&D pipeline is good, with investment in multiple modalities, and the commercial lining of products is also good. Other than all these things, there is a sense of pride I feel when I say that I work for Sanofi. I have seen other reviews about the compensation and benefits, but they are decent. The 401k contributions is generous and the health insurance and dental insurance are good. Work life balance is very good.
Cons
Some aspects of bureaucracy can be a little frustrating, but it happens in every big pharma.