Indeed is unusable for the points made here.
Under the graphics you have the links to the respective jobs. Just check for yourself what these "Go" jobs [1] and the "Scala" jobs [2] are. "Haskell" jobs are also interesting.
And more: don't forget that currently even Php ads feature the infamous "experience with functional programming (Lisp, Clojure, Haskell) is a plus" line.