Marcus Hirt is one of the founders of Appeal Virtual Machines, the company that created the JRockit Java Virtual Machine. He is currently working as a Director of Engineering at Datadog. In his spare time he enjoys coding on his many pet projects, composing music, and scuba diving. Marcus has contributed Java related articles, whitepapers, tutorials, and webinars to the Java community, and has been an appreciated speaker at conferences like Oracle Open World, JavaOne and EclipseCon. Marcus holds an M.Sc. in Computer Science from the Royal Institute of Technology in Stockholm.