Ask YC: job market for functional programmers

I wasn't a computer science major in college, though I took some classes in it. My first programming job (most recent) was at a hedge fund, and most of my work was in the functional paradigm.

I'm not afraid to learn a new language, because that's always been easy for me, but I want to continue working in functional languages, e.g. Lisp, Haskell, ML.

What types of work are people doing with these languages? How is the FP job market, in general, where are the jobs located, and which of these languages are most employable?