Stijn is CTO at ACA IT-Solutions. His background skills include software architecture, designing & implementing enterprise class systems based on XML & WebServices, Enterprise Application Integration and B2B integration. He also has a strong background in agile methods. Instructing Java, Patterns, Architecture & XML courses is another way of his involvement with the JEE technology. He advises customers with regards to their enterprise system blueprints, and how to streamline their development process while defining and maintaining the technical roadmap for ACA IT-Solutions.