Pros: By far, the most advanced and amazing software architecture and internal tools I've ever seen. Great culture, little management overhead, and a ton of really, really smart people. Lots of flexibility in changing projects, lots of opportunities for learning: * SDN * Linux kernel * Switching ASICs * Networking protocols * Internal tools You name it. A total "engineering culture" (mottos "do the right thing" and "quality is more important than time to market" are not lip service here). If you like developing software, you'll really love it. (There's even a SW development office in San Francisco.)

Cons: Initial learning curves are longer than usual, but you eventually get there.

Pros: Good management, smart colleagues, and a good pay structure.

Cons: Not transparent enough about their business decisions.

Pros: Good pay. Good work-life balance. Free canteen food.

Cons: Work may get boring sometimes.