Assistant professor (level B), University of Murcia, Spain (10/1981-12/1982)
Assistant professor of Botany, University of Murcia, Spain (1/1983-12/1986)
Professor titular of University (Plant Biology), University of Murcia, Spain (12/1986-4/2004)
Professor of Botany, University of Murcia, Spain (4/2004 until present)