After this, Schoof was appointed as head of a number of justice and security related services: he was chief director at the Immigration and Naturalisation Service (from 1999 at least until 2003), project-director-general for the development of the new immigration legislation, director-general for the police (at least from 2010 until 2013), Nationaal Coördinator Terrorismebestrijding en Veiligheid (head of the national counter terrorism unit) and director-general of the General Intelligence and Security Service.