Gustavo Márquez Sosa is an independent software engineering consultant specialized in SOFTWARE TESTING and SOFTWARE REQUIREMENTS MANAGEMENT. With experience in excess of 12 years in the IT area, he has worked with international, public and private organizations such as AENA (Spanish Airport Authority, Madrid - Spain), Air France (Paris, France), Escuela Técnica Superior de Ingenieros Industriales (Madrid – Spain), Telefónica Móviles (Madrid - Spain), Icon Medialab (Madrid - Spain), Visure Solutions (Madrid - Spain) and Díaz & Hilterscheid (Berlin - Germany). He has participated in professional events such as ExpoQA (Madrid – Spain) presenting his proprietary “Software Requirement Management” course. As part of his consulting activities he is an accredited trainer for the “Certfied Tester – Foundation Level” course. As member of the Spanish Software Testing Qualification Board he is the head of the Glossary translation workgroup for Spain and Latin America.