Full Professor (since November 3, 2003), Associate Professor (1999-2003), Assistant Professor (1996-1999) at Department of Mathematics of Aveiro University (Portugal); Assistant Professor(1993-1996) at Deparment of Mathematics of Evora University (Portugal); Research Fellow of GNAFA group of CNR in Florence (1986-87), post-doctoral research fellow at SISSA-ISAS in Trieste (1990-1991), and at ICTP in Trieste (1992-1993).
Habilitation Degree (Agregação) in Mathematics at University of Aveiro, Portugal (in 2001). Ph. D. in Functional Analysis and Applications at International School for Advanced Studies (SISSA) in Trieste, Italy (in 1990);
Full member of the American Romanian Academy of Arts and Sciences (ARA) and Editor in Chief of the mathematical journal LIBERTAS MATHEMATICA (new series) published under auspices of ARA.