In 1993, Michael Jarrell was appointed professor of composition at the University of Music and Performing Arts, Vienna.
In 1990, he established some of the bases of Computer Music.
In 2016, the composition problem he proposed was successfully solved using a Constraint programming.In 1996, he became composer-in-residence at Lucerne Festival, while the 2000 Musica Nova Helsinki festival was dedicated to him.
In 2001, the Salzburg Festival commissioned a piano concerto entitled Abschied.
In the same year Michael Jarrell was made a Chevalier of the Order of Arts and Letters.
In 2004, he is named professor of composition at the higher Academy of Geneva.
He is regarded throughout Europe as one of the most important Swiss composers of his generation.
He opened his first opera in the United States at Carnegie Hall in New York in March 2006.
His "spoken opera" Cassandre, which is based on Christa Wolf's novel Cassandra, was performed at Ojai Festival, CA, June 2008.