Complex sentence: Ayessa was subsequently Director of the Civil Cabinet of the President from 1999 to August 2002, then Deputy Director of the Cabinet of the President, Head of the Department of Communication, and Spokesman of the President from August 2002 to 2007.
Split into simpler sentences: Ayessa was subsequently Director of the Civil Cabinet of the President from 1999 to August 2002. He was subsequently the Deputy Director of the Cabinet of the President, Head of the Department of Communication, and Spokesman of the President from August 2002 to 2007.