Pros
Excellent coworkers, lots of incredible learning opportunities, plenty of bandwidth to try out new technologies as long as they're used on the back-end. Great place to scale up from a more junior dev to a senior one.
Cons
Terrible management in the org has had a massive detrimental effect on the engineering culture, your technical expertise is ignored in favor of business partnerships when relevant and higher-level management likes to micromanage and frequently makes poor decisions against your recommendations in matters in which they should not have a part. You'll probably have to do DevOps work yourself, and will probably get paged frequently any time an internal service you depend upon goes down regardless of whether or not you can do anything about it.