Yes, seriously legacy software (still a lot of Perl in their production web code, including ancient Perl template engines) and the on-calls are truly bad. AWS is more modern, but still not entirely awesome from what I've heard.

On the plus side, hiring people out of there after a year is usually pretty easy.

What are the typical on-calls?

You are paged most nights and often more than once a night during your rotation and you are on rotation a lot.