Citrix, United Kingdom

Citrix uses OCaml in XenServer, a world-class server virtualization system. Most components of XenServer are released as open source. The open-source XenServer toolstack components implemented in OCaml are bundled in the XS-Opam repository on GitHub.

As of summer 2018, Citrix in Cambridge UK is hiring software engineers passionate about functional programming and OCaml in particular.