Pros: - Free food - Reasonably good compensation - Reasonably flexible hours - Lots of smart, capable people - Work can be exciting

Cons: Working on product teams is trying because of the micromanagement of Zuck and other upper management. Many projects get delayed because they ask for random changes. Working on backend teams doesn't have that problem, but they are typically second-class citizens and don't get as much respect as frontend teams. Facebook is very large now and the bureaucracy is starting to accumulate quickly. It used to be that engineers could just do stuff, but now almost every change requires a great deal of pointless discussion or overhead. For instance, you now have to fill out a form just to log some data. Very strong focus on some of the "hot" product teams means that the rest of the company doesn't get preference with respect to product managers, designers, etc. Most frontend work is boring, mundane PHP. The only challenge comes from poorly-designed legacy systems. Managers will often ask you to work on something you don't care about just because it's a priority for the company. This goes against the claimed philosophy of Facebook, but it's the way things are trending.

Pros: - Wonderful food - A company culture encouraging absolute openness - No red tape, in terms of work, resources, people - Opportunities to get together with other employees to hack on what interests you - Freedom to work from home and to come into work whenever

Cons: - Parking - Neighboring houses dislike us. - Terribly inefficient and a large number of emails. - Too much 'The Son of Man' around the office.

Pros: A bureaucracy-free environment that allows you to simply get work done. Strong management with strong technical backgrounds all the way to the top. A very metric-driven engineering team. The ability to prioritize tasks based on what you think is important. A remarkably well-defined review process that encourages personal development in different areas. Company policy to leave unnecessary meetings early or skip them entirely.

Cons: Some politics and cliques. Some user-facing projects have too many product managers. Some late nights when supporting new code pushes. Fighting fires can become a full-time job.