· Researcher in Natural Language Processing Group, Columbia University2024–
· Lecturer, UP12017–
· Research Collaborator, Université Pierre et Marie Curie (UPMC)2014–
· Research Laboratory Head, Thales Research and Technology2011–
· Software Engineer, UPMC2010–
· Visiting Researcher, UPMC2004–
· Associate Professor, Universidade Federal de Pernambuco (UFPE)1997–
· Post-Doctoral Researcher, Bellcore Laboratories1995–
· PhD in Computer Science, Columbia University1985–
· Master in Computer Engineering, ESIEA1985–
· Master in Artificial Intelligence, UPMC1985–