Usually belonging in the Pakistan Administrative Service (seen the most elite and prestigious cadre of the Civil Service of Pakistan where PAS officers of Grade 22 often seen as stronger than the federal government ministers), the Principal Secretary to the President of Pakistan is currently Tariq Najmi while the longest serving one in history was ace bureaucrat Qudrat Ullah Shahab.
The position holder usually belongs to the Pakistan Administrative Service. The Pakistan Administrative Service, or PAS (Urdu:   ) (previously known as the District Management Group or DMG before 1 June 2012) is the most elite and prestigious cadre of the Civil Service of Pakistan. The Pakistan Administrative Service over the years has emerged as the most consolidated and developed civil institution, with the PAS officers of Grade 22 often seen as stronger than the federal government ministers. The current Principal Secretary to the President is Tariq Najmi. The longest serving Principal Secretary to the President was ace bureaucrat Qudrat Ullah Shahab, who served with three heads of state. 
