I work in a FinTech startup and most of our components are written in Elixir and are in production. We are very happy with it. So I would say atleast consider E

I work in a FinTech startup and most of our components are written in Elixir and are in production. We are very happy with it. So I would say atleast consider Elixir and Phoenix. It's as performant as Golang, it's even better in some cases and it's a better language than Golang imo.