[nbm]

As a complement to dr's offer above, if you want to talk to someone who has been at FB for a while and worked with a bunch of infrastructure (traffic, core systems, &c.) and product (graph search, site integrity, &c.) teams, hit me up. My unixname is neil (and my non-work contact details are in the HN profile).

I'd like to help you and dr find you a good match - FB has been a great opportunity for me, but I stumbled a bit so I know how important finding the right thing to work on is. I can also offer you my frank impression of the performance review system here, which I've been through a few times as an IC and as a manager.