@gert.claeskens please be aware that your application entry point is the start point for the component scan (implictly implied by

@SpringBootApplication

), so that you either have to add the package of your

FooRepository

to the component scan packages, or put FooRepository in the same package or sub-package where

ReactiveKotlinApplication

lives, see https://docs.spring.io/spring-boot/docs/current/reference/html/using-boot-structuring-your-code.html for details

Seems only to work in a subpackage. My

ReactiveKotlinApplication

is in

com.example.infrastructure

Repositories are in

com.example.domain

with

@ComponentScan

pointing at

com.example

, IntelliJ picks up the repositories in the Spring Context.