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: The only pro is that the work pressure is less.

Cons: The worst part is that when interns and freshers join, they are forced to rate the company as 5 stars on Glassdoor. This is pathetic. So, do not go by the ratings. Worst HRs. No job levels, leading to lesser growth opportunities. No perks besides the base salary, which is also very low compared to the market. No annual hikes yet. Freshers are earning more than you, which is demotivating.

Pros: Flexible working hours. Lesser work stress. Steep learning curve at the beginning, which helps you adapt and learn more. Mentors and managers are supportive.

Cons: Small office with fewer amenities, though it's going to change soon :)