Vantaggi
Everyone is very smart and a high performer. The money is very good. You can work at a larger scale than anywhere else in the world. If you want to put in extra hours and a lot of extra work, you can advance quickly. You have more input over what you work on than at other companies. You get name recognition on your resume. Lots of diversity and respect for diversity, but almost no DEI-related BS.
Svantaggi
Long hours are common. Pressure to perform is very high, but criteria for success are often fuzzy and sometimes clarified only after. Many legacy systems means a lot of maintenance of the worst and most tedious kind. Everyone has to be on call, and I was paged often during every shift. There is always a fire to put out and never a moment to breathe. So much doc writing and server-type maintenance meant I barely got to code.