Pros
Stable, they likely won't lay you off. Business is going great. Pay is good (but other tech companies pay better)
Cons
Very secretive and that can affect your career: you won't know of important projects unless someone likes you enough to get you approved to know about them. That means that impactful projects can remain out of reach forever. This also leads to a lot of unhealthy competitiveness between employees and an altogether toxic workplace culture. You reinvent the wheel all the time, Since no one shares code with other parts of the company, there's very little shared infra, which means you end up rewriting common frameworks and stuff like that. Benefits are below the tech industry average, very little vacation time. They don't cover a lot of medications and every year coverage is diminishing. As a non-American the company feels very unwelcoming. I've even heard people complain about others' grammar and that's just discriminatory to those of us not educated in english as a native language. They have breaks that are centered around american holidays (christmas and thanksgiving) but that doesn't help those of us who dont celebrate those. If you come from abroad it will be hard to visit family when working for apple