Issack is the former Chairperson of the Independent Electoral and Boundaries Commission (IEBC) of the Republic of Kenya from November 2011 to October 6, 2016.

Issack also served as Legal Consultant for UNDP-Somalia on the Somalia Constitution Making Project from June to December 2008.

He is the chairman of the Executive Council of the Association of African Election Authorities (AAEA) based in Accra.

the Chairperson of the Commonwealth Electoral Network Steering Committee (CEN – SC), based in London.

Ahmed Issack Hassan attended Garissa High School in 1988 before proceeding to the University of Nairobi, which he graduated from in 1992 with a bachelor's degree in law.