Kirk works as a consultant offering Java performance-related services and training. In 2006 has nominated as Java Champion by his peers in recognition of his work performance tuning Java applications. Kirk has written many articles and spoken at several conferences on the subject of performance tuning. He helped evolvewww.javaperformancetuning.com as a resource for performance tuning tips and information. Recently he founded co-jClarity, a company, which is focused on building the next generation of performance diagnostic tooling.