Gregory Sisson

Director of Cybersecurity Operations (IM33)
Office of the Chief Information Officer

Department of Energy

Mr. Sisson is currently serving in the Department of Energy’s Office of the CIO as the Director of Cybersecurity Operations (IM33).

Prior to joining DOE, he served as the Chief of Staff and the Deputy Director of Operations (DJ3) at Joint Force Headquarters Department of Defense Information Network (JFHQ-DODIN). JFHQ-DODIN is a component of United States Cyber Command, and executes Command and Control of DOD information network operations and defensive cyberspace operations globally to synchronize Component critical mission functions protection and maintain freedom of action.

Before JFHQ-DODIN, he served as a Cyberspace and Information Technology Training Capabilities Analyst for the Joint Staff J7 Director of Joint Training (DJT). In this job he was responsible for engaging stakeholders across the Joint Staff, Office of the Secretary of Defense (OSD), Combatant Commands, Defense Information Systems Agency (DISA), US Cyber Command, Service Components, and the interagency community in order to identify common efforts, and coordinate actions integral to the development, delivery and implementation of the DOD’s Cyber Strategy.

In 2012, Mr. Sisson was selected from amongst his peers to participate in the 2013 class of the Defense Senior Leader Development Program (DSLDP). Through DSLDP he attended the College of Naval Warfare and served in a developmental assignment in the Office of the Undersecretary of Defense for Policy as a Senior Advisor to the Deputy Assistant Secretary of Defense (DASD) for Countering Weapons of Mass Destruction (CWMD).

Prior to serving as a DoD Civilian, Mr. Sisson served over 20 years as a non-commissioned and commissioned officer in the United States Army where he led diverse organizations at multiple echelons. He retired as a Signal Officer in 2004.

Mr. Sisson completed his undergraduate work at the University of South Carolina Aiken where he earned a Bachelor of Arts in History and, in 2014, graduated from the College of Naval Warfare in Newport, RI where he earned a Master of Arts in National Security and Strategic Studies.