In all the Haskell teams I worked in, the candidate knowing Haskell was rarely a significant advantage (except for cases where the most experienced Haskeller leaves, and then you need to hire someone to direct your GHC-internals questions to).

If you are interested in a job using a functional language you can pick basically any of them and then jump ship to a different one. I wrote Clojure for many years before switching to Haskell.