He worked in New Nigerian Newspapers Company Ltd. between 1976 and 1989 where he rose from a cub reporter to managing director. He was co-founder and chief executive of the rested Citizen newsmagazine between 1990 and 1994. He served in the military administration of General Abdulsalami Alhaji Abubakar as his chief press secretary between October 1998 and May 1999. He taught in the Mass Communications Department of Ahmadu Bello University, Zaria, as a Senior Lecturer between 2008 and 2014.
Haruna was a political columnist between 1978 and 2016 in several publications including New Nigerian, Today, Trust, Nation, Gamji.com and Newsdiaryonline.
In recent years he has delivered papers on Politics, Journalism and Mass Communication as a resource person at seminars, lectures and workshops organised by universities and institutions like the Nigerian Press Council, the Nigerian Guild of Editors and the Independent National Electoral Commission.
Haruna is a Fellow of the Newspaper Proprietors Association of Nigeria, Nigerian Guild of Editors and African Center for Democratic Governance.