This weekend I have been tinkering around with Kotlin, Spring Boot and Angular 4.
I experienced how to combine everything in a multi-project using Gradle as a build tool.
As I'm getting more into Kotlin I like it more and more. Especially the lack of a lot of boilerplate code is very refreshing. I still have to improve on the overall style but I will definitely use Kotlin more in the future.
You can find the source of the still evolving experiment in my GitHub account.