Pros: I work in engineering. The people I work with are bright and engaged, an interesting (and, I think, healthy) mix of CS Ph.D. types and people with other backgrounds. People believe in the mission. The organization seems very well run, particularly under the current Executive Director.

Cons: Team cultures can vary pretty widely, and there are some curmudgeons here and there. Happily, they are not the norm.

Pros: You get to work on famous, very nice products. Most of the work is done 'in the open'.

Cons: Sometimes endless discussions with community members on how to do things. These discussions can get quite violent. Somewhat intransparent communication between local Wikimedias which drive other projects. Wikidata, a product mainly developed by Wikimedia Germany for example, could be a great product with more international support.

Pros: Flexible working hours: 32-40 a week. Get to travel every once in a while. Learn as you go and grow.

Cons: Meetings. Meetings all the time! The Agile process employed is taken out of proportion, leading to meetings all the time. It's a slow environment, which is fine because the decision process to approve features is long, as they work with a lot of legacy code.