Before joining the Australian Graduate School of Policing and Security at Charles Sturt University as a Lecturer on Terrorism and Security Studies, Cesar worked for the Australian Strategic Policy Institute (ASPI), a National Security and Defence think tank based in Canberra.

Before that, He spent five years in Colombia working for the Terrorism Prevention Branch of the United Nations Office on Drugs and Crime (UNODC), and also serving as a consultant and advisor for the Counter-Narcotics Directorate of the National Police of Colombia and the Doctrine and Planning Office.

He completed a double Master’s Degree of Policing, Intelligence and Counter Terrorism with the Masters of International Security Studies at Macquarie University. He also holds a Bachelor’s Degree on Government and International Relations at Externado University in Colombia.

Some of his articles have been published in The Australian, The Canberra Times, The Strategist (ASPI's blog), The Australian Outlook (The AIIA's blog), El Tiempo (Colombia's most widely circulated newspaper), Portafolio (Colombia's version of the Financial Review), Revista Seguridad en América  (Mexico), and he is a frequent commentator for Hora Trece SBS’s daily radio show in Spanish. More recently, He has been awarded a DFAT grant to lead with the first Australia-Colombian Foreign Policy Dialogue next year.