[jabl]

Yeah, or Haskell.

But those have been out there in a more or less mature form for decades, with no major uptake in sight. I guess they're just too esoteric for them to reach critical mass. So here I am, stuck with bash/python/C, and dabbling a bit with Rust..

[pjmlp]

If you would like to work in finance or compiler development, there is enough uptake of ML derived languages.