Carlos Valcarcel has been a developer for more than 15 years and has used Java from its earliest availability. He is currently the director of technology at Trivera Technologies LLC and was a VP at Merrill Lynch. He has consulted for clients, including Jefferson National Laboratory, JPMorgan, Chase, John Hancock and Lincoln Reinsurance, on the use of object-oriented technology, Java, design patterns, refactoring and test-driven development. He has also led formal training for Sun and IBM. He is involved in the Eclipse community, is frequently tapped for quick answers about IBM and Eclipse technology and helped to write the Web Services tutorial for IBM's "developerWorks" website.