I've attended a few Haskell conferences over the years and the make up tends to be fairly evenly split between PL researchers, defence, aerospace, and finance. I recall the food stop after an event at Imperial where our table was twenty-ish people from Airbus, Barclays, Lockheed, QinetiQ, and Thales.

If you're looking to work in Haskell there are some avenues to hunt down. Same caveats as with Standard Chartered and Meta mentioned in the article, there is Haskell but it is scuttling around in the corners not flowing from everywhere.