I feel like the "boring" part of the web app (setup, configuration, routing, etc.) could benefit from using a more strictly typed language like kotlin, and http

I feel like the "boring" part of the web app (setup, configuration, routing, etc.) could benefit from using a more strictly typed language like kotlin, and https://jooby.io/ https://jooby.io/ explicitely supports it. Once you have the skeleton, I can see how lisp and ABCL could be used to implement some interesting business logic or even template rendering. So kind of like using lisp a callable scripting language as opposed to doing everything in lisp that is a bit more tedious imho.