1978-1979 visiting scientist at Carnegie-Mellon University, Pittsburgh (PA-USA)
1979-1980 visiting scientist at Research Center IBM, S.Jose (CA-USA)
1992-1993 visiting professor at University of Utah, Salt Lake City (UT-USA)
1988-1991 President of Consiglio di Corso di Laurea in Scienze dell’Informazione at University of Pisa
1988-1991 Presidente of Conferenza Permanente dei Presidenti dei corsi di laurea in Scienze dell’Informazione
1994-1996 Founder and first President of GRIN (Gruppo nazionale dei docenti universitari del raggruppamento di Informatica)
1996-2002 Director of Department of Computer Science at University of Pisa
1997-2002 President of Board of Department Directors at University of Pisa
2003 President of Consorzio Pisa Ricerche
Since 2005 President of Centro Studi Enriques in Livorno
2006-2010: member of FIRB Commission (Finanziamento alla Ricerca di Base) of the Italian Ministry of University and Research
2010-2016 Director of Department of Computer Science at University of Pisa
2011 member of Statute Commission University of Pisa
Since 2011 Academic Senator at University of Pisa