Petar Tahchiev is a software engineer with HP and the Jakarta Cactus lead developer.
Felipe Leme is a JCP member and contributor to DbUnit and Cactus.
In addition to being an active member of the Maven development team, Vincent Massol is the creator of the Jakarta Cactus framework. After having spent four years as a technical architect on several major projects (mostly J2EE), Vincent is now the co-founder and CTO of Pivolis, a company specializing in applying agile methodologies to offshore software development. He lives in the City of Light, Paris, France.