As an open source community contributor, he has published five Liferay books from 2008 to 2012. He is also an expert on Liferay integration with Ad Server OpenX, different search engines, enterprise content including videos, audio, images, documents, and web contents, and other technologies, such as BPM Intalio and Business Intelligence Pentaho, LDAP, and SSO. He holds a Ph.D. in Computer Science from the University of Zurich, where he focused on Integrity Control in federated database systems.