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 Architect, Team Lead, and Engineering Manager for the JRockit Mission Control team. In his spare time he enjoys coding on his many pet projects, composing music, and scuba diving. Marcus has contributed JRockit related articles, whitepapers, tutorials, and webinars to the JRockit community, and has been an appreciated speaker at Oracle Open World, eWorld, BEAWorld, EclipseCon, Nordev, and Expert Zone Developer Summit. He received his M.Sc. education in Computer Science at the Royal Institute of Technology in Stockholm. Marcus Hirt lives in Stockholm with his wife and two children.

Marcus Lagergren has an M.Sc. in Computer Science from the Royal Institute of Technology in Stockholm, Sweden. He majored in theoretical computer science and complexity theory since it was way more manly than, for example, database systems. He has a background in computer security but has worked with runtimes since 1999. Marcus was one of the founding members of Appeal Virtual Machines, the company that developed the JRockit JVM. Marcus has been Team Lead and Architect for the JRockit code generators and has been involved in pretty much every other aspect of the JRockit JVM internals over the years. He has presented at various conferences, such as JavaOne, BEAWorld, and eWorld and holds several patents on runtime technology. Since 2008, he works for Oracle on a fast virtualization platform. Marcus likes power tools, heavy metal, and scuba diving. Marcus Lagergren lives in Stockholm with his wife and two daughters.