Akre held positions as shareholder, Director, CEO of the Asset Management Division and Director of Research at Johnston, Lemon & Co. (a NYSE member firm).

In addition to his writing career, he has held positions as Parts Marketing Manager for Yamaha Motorcycles, Director of Information Systems for Nissan USA, and CIO of Edmunds.com.

In Venezuela he has held positions such as Finance Director of the Army, and Director of Engineering at the Defense Ministry.

He has also held two positions in the SADR government, Secretary General of Government (cabinet position) 2001-2003 and Director of Protocol 2003-2007 of the President Mohamed Abdelaziz.

While with the CIA he held the positions of Director of Personnel, Director of Counterintelligence, as well as Deputy Director for Operations.

Beginning in 2000, Hohagen held several positions at UOL (Universo Online) including the Human Resources Director, Vice-President of advertising and e-commerce, and Director of Electronic Commerce.

He held the positions of senior Crown attorney and Director of Prosecutions before being appointed Assistant Deputy Attorney General in 1998.

From the mid-1930s Brooke held a number of important appointments: Inspector of Artillery, Director of Military Training and then GOC of the Mobile Division.

Sperber currently holds the positions of Directeur de Recherche émérite at the Centre National de la Recherche Scientifique and Director of the International Cognition and Culture Institute.

During his tenure at Hofstra University Chiu held the positions of Professor of Comparative Literature and Languages, Dean of University Advisement, and Director of Asian Studies.