Shameless self-plug. We've started using Haskell at Vacation Labs and we even spoke about it at Functional Conf 2017, Bangalore [1]. The talk was called "Joys & frustrations of putting 34,000 lines of Haskell into production" -- so it wasn't only fan-boyism!

* Video of the talk - https://www.youtube.com/watch?v=7NB8tMa8sUk)

* Slides (with more text and written commentary) - https://docs.google.com/presentation/d/1ggTVXzqCxcmkV5mKUH_g...

[1] https://confengine.com/functional-conf-2017/proposal/5409/re...