I've used Haskell (more than trivially) at two positions where I was working for someone else. The first time was at Uber, where a side project I had started i

I've used Haskell (more than trivially) at two positions where I was working for someone else. The first time was at Uber, where a side project I had started in Haskell proved to be something we needed, so I spent a year building on top of that. My second time was at LeapYear, whose stack was (and I believe still is) predominantly Haskell. Both good experiences - happy to elaborate on either.