While messing around in last year's Advent of Code project, I wanted to see if I could add a bunch of JVM languages and get them to cooperate. Kotlin's easy to add. When I wanted to add Clojure, I found Stuart Halloway's example of calling Clojure from Java that uses Maven as the build tool. I updated it with an example
pom.xml that integrates Kotlin into the build process and gives a simple example of calling Clojure from Kotlin from Java.
I hope this is useful to someone!