Serokell is a well-known company in functional programming with a great reputation. It specializes in large-scale and complicated issues, so if no other companies dare to realize your project, this is the place to go. Apart from Haskell, they also apply other advanced functional programming technologies. They use Rust, TypeScript, C++, and Elixir to expand the functionality of their programs and increase technological flexibility.
Serokell is a completely remote country with representatives all around the world. Working with them you enjoy all the perks of a professional approach to software development in the comfort of your own home or office. Personalized approach and combination of practical experience and science-driven approach make them one of the best companies to work with out there.