Google is pretty limited in the functional languages as a main tool for your job category. It's easy enough to sneak in functional things here and there, though.
Standard Chartered, where I worked before doing FP, is looking for Haskellers every now and then. Contact me (see profile) for some more info. Citrix is still using OCaml in Cambridge, UK, as far as I know. Not as much Haskell any more as they used to.
Contact details are in my profile (or write to me via orb@google.com).
I currently work for Google. They are pretty enlightened in general, but somewhat conservative in official language choice for big projects, but it is possible to do prototypes and smaller projects in a wide variety of languages. (Eg we have a Haskell group, and of course there are 20% projects.)
Or you can look for a more enlightened employer. Mine is hiring, for example.