If you have any desire to employ a Haskell developer you will need to realize that they ultimately depend on the undertaking that you have at the top of the priority list. While it is quite often best to enlist somebody with an IT degree that in itself isn't any assurance that they will actually want to work with Haskell.
Your Haskell engineer should have insight with the utilization of Haskell and ideally other useful programming dialects. Having experience across different dialects, for example, Scala will assist them with guaranteeing that they will actually want to convey what you want.