Pros: Dropbox is making the transition from a startup to a real company. And they're doing it in an audacious way: make something people want, charge them for it, and sell it to millions of people. There's no "capture a fraction of the transaction cost" or "throw ads at people to extract value from something they'd like to get for free" here. It's a very clear, "make something people want enough that they'll pay you for it" business model. And as a maker, that's an exciting place to be. The level of vertical integration (buy electricity, server components, and dark fiber/sell to mom and pop consumers) is the kind of thing you only expect to see from the phone company, or maybe Google or Amazon. Certainly not from a company with a couple hundred engineers. On a day-to-day basis, that means that the impact any particular engineer can have is HIGH. The overall philosophy at Dropbox seems to be, "hire the best people you can find, and give them the freedom to do their thing." On the engineering side, this means the team is friendly, smart, and eager to help each other, making it a great place to learn. That same philosophy applies outside of engineering, as well. Take the tuck shop (cafe), for example: Chef Brian and Chef Danny have hired great talent and given them the latitude to be creative, and as a result Dropbox has the best company food I've come across. My friends at Google love coming to Dropbox for lunch because the food is such a treat.

Cons: Dropbox is making the transition from a startup to a real company. And that means having the downsides of both a startup and a real company. The real company downsides are pretty familiar: * there's not as much openness as at a small company * you can get stuck with a lousy manager or on a project that gets canned * there's things you can't know and hoops you have to jump through for confidentiality/strategy/compliance reasons, etc. The small company downsides are also real: * your stock is monopoly money * there's a lot of uncertainty * and if you get stuck with a lousy manager, there might not be the systems in place to deal with it. My biggest concern personally is that leveling and career progression seems fairly haphazard. Reviews have happened about twice a year since 2014, and every single review cycle has used a different set of criteria. And they're developing a new one for this fall's reviews. On some level, the things that make you a good engineer are universal across evaluation frameworks, but on another (e.g. does the system emphasize how well you facilitate other teams' work or how well your team executes its own tasks) it can make a pretty substantial difference.

Pros: Made lots of friends who remained friends after I left.

Cons: Not a lot of senior / experienced engineers to learn from.

Pros: Work with thoughtful people on a well-regarded product.

Cons: The company needs to go beyond FSS.