This is not really specific to Kotlin, Maven or Spring Boot. This is a matter of using Java correctly. Use java -jar some-name-SNAPSHOT.jar or java -cp some-name-SNAPSHOT.jar name.of.your.Class. Please note it will work only if you built a fat jar - it won’t work with just a regular jar. Even better, I suspect Maven could have some plugins for building the application package automatically (but I’m not sure, I’m not very familiar with Maven).