One day in the life of a JVM engineer

Our JVM world consists of two layers: on one layer there are Java and Kotlin developers, cool specialists about Spring and Hibernate, wizards of enterprising and huge server applications. But there is an opinion that inside this globe there is another ball, much bigger than the outer one! We are talking about the second layer: the development of the Java virtual machine itself, which is used by Java developers.

Ivan takes a peek into this other world: how do JVM developers live? What tasks and challenges do they face? How is their life different from classic Java development? And can a Java developer go to the other side by becoming a JVM engineer?