Pros: Tons of opportunities; there will be some good teams doing almost anything you might be interested in! Moves fast! You'll learn a lot, both technical and business. The vast and varied businesses are generally well managed; upper management is very competent. Top-notch engineers are plentiful if you're in the pockets of businesses that are heavily tech-driven. Great internal mobility. You can transfer very easily. PIP culture is not real (stack ranking is real, though). I've only seen two cases in my seven years here, and both cases were people who were really low performers and given one to two years of coaching/opportunities to improve.

Cons: Doing the right thing for customers/business doesn't always mean the right thing for engineers. There are orgs that seem to operate with the mindset that engineers are expandable resources. Always have fresh meat to churn through, instead of investing in more sustainable growth. The quality of teams varies widely. Bad teams will break/burn out even strong, ambitious people. It's very real and sad to see. Find a new team quickly if you land in a team like this. Not all business segments need top-tier talent, but even the ones that do can't attract the best sometimes.

Pros: This company is fine.

Cons: Not all employees are qualified or good.

Pros: Not a lot of politics. A good environment for solving problems and building cool things. Great internal tools, both for deploying and building services and for data storage, etc.

Cons: For a tech company, there is a large business side. This means you spend more time than you'd want trying to convince and work with the business instead of just creating cool products.