Also the referenced post is about them acquiring plataformatec, not about using elixir. Jose Valim (the creator of elixir) left plataformatec after the nubank a

Also the referenced post is about them acquiring plataformatec, not about using elixir. Jose Valim (the creator of elixir) left plataformatec after the nubank acquisition in order to continue developing elixir, I've never heard of nubank using elixir, afaik they're solidly a clojure shop with no plans on changing.