John Carnell

John Carnell is a principal architect for NetChange, LLC, an IT management consulting firm specializing in enterprise application design and implementation. John is also an adjunct facility member of the Waukesha County Technical College's (WCTC's) School of Business. In addition, John is a prolific speaker and writer. He has spoken at national conferences, such as Internet Expo, the Data Warehousing Institute, and the Complete Programmer's Network Software Symposiums. John has authored, coauthored, and been a technical reviewer for a number of technical books and industry publications.

Rob Harrop

Rob Harrop is a software consultant specializing in delivering high-performance, highly-scalable enterprise applications. He is an experienced architect with a particular flair for understanding and solving complex design issues. With a thorough knowledge of both Java and .NET, Harrop has successfully deployed projects across both platforms. He also has extensive experience across a variety of sectors, retail and government in particular.

Harrop is the author of five books, including Pro Spring, a widely-acclaimed, comprehensive resource on the Spring Framework.

Harrop has been a core developer of the Spring Framework since June 2004 and currently leads the JMX and AOP efforts. He co-founded UK-based software company, Cake Solutions, in May 2001, having spent the previous two years working as Lead Developer for a successful dotcom start-up. Rob is a member of the JCP and is involved in the JSR-255 Expert Group for JMX 2.0.