Interesting, I'd say the ones to challenge in the backend space are Java, C#, Scala, F#, OCaml, Erlang, Kotlin, Clojure, Elixir and Haskell. Those are the stap

Interesting, I'd say the ones to challenge in the backend space are Java, C#, Scala, F#, OCaml, Erlang, Kotlin, Clojure, Elixir and Haskell. Those are the stapled languages in the backend space which Go competes in. You could give some of them a try.