Steinar Mageli has worked as a lawyer for 30 years, with extensive experience from both private and public enterprises. He has been admitted to the Supreme Court since 1994. For a number of years Mageli was employed by the Office of the Attorney General where he worked with public authorities; i.e. the state and state corporations and directorates.
In private enterprise, Mageli has primarily worked for the public, state and municipalities and state and municipally owned companies. Mageli has extensive experience in litigating cases before all judicial authorities, including the Supreme Court.