Nitin Natarajan is the owner of NN Global, LLC, an advisory firm focusing on critical infrastructure resilience, cybersecurity, healthcare, and emergency management. He provides strategic advice to public and private sector entities on actions they can take to strengthen their resilience against cyber and physical threats.

Prior to this role, Natarajan was appointed to serve as the Deputy Director for the U.S. Cybersecurity and Infrastructure Security Agency (CISA) in February 2021 and held the role until January 2025. As Deputy Director, he represented the agency in key domestic and international policy forums and led efforts to shape U.S. defensive cybersecurity and critical infrastructure resilience policies and programs. Natarajan is often called upon to keynote conferences around the world on cybersecurity, critical infrastructure resilience, and healthcare topics.

Prior to CISA he served as an executive with consulting firms, providing subject matter expertise and strategic advice on a variety of topics, including cybersecurity, homeland and national security, critical infrastructure protection, environmental emergency management, continuity of operations, and health security matters.

Natarajan has also held several key leadership positions within the federal government, bringing his expertise to a range of high-impact roles. These include serving as Deputy Assistant Administrator at the U.S. Environmental Protection Agency (EPA) for the Office of Land and Emergency Management, the Director of Critical Infrastructure Policy at the White House/National Security Council (NSC), and as a Director at the U.S. Department of Health and Human Services (HHS) overseeing various healthcare and public health programs.

Natarajan brings a distinguished and extensive background in emergency management, with experience spanning several decades. He has directed and supported emergency operations at all levels of government and in the private sector. Throughout his career, he has responded to disasters on the ground as the Commander of a Disaster Medical Assistance Team and staffed emergency operations centers at the local, state, regional, and national levels.  Throughout his career, he has responded to disasters on the ground as the Commander of a Disaster Medical Assistance Team and supported emergency operations centers at the local, state, regional, and national levels.  His experience also includes deployments to FEMA Joint Field Offices and service at the White House. His assignments have included deployments to FEMA Joint Field Offices and service at the White House.

He taught ICS-300 and ICS-400 courses and was a member of the working group that conducted the major re-write of the Hospital Incident Command System (HICS) in 2006. Beyond traditional emergency management, Natarajan has been involved in healthcare, public health, and environmental emergency management responses and has expertise not only with Stafford Act and non-Stafford Act disasters, but also those conducted under the authorities of the Oil Pollution Act of 1990.

Prior to his tenure in the federal government, Natarajan held positions at the state and local government level and served as a hospital administrator in New York.

At the beginning of his career, Natarajan spent 13 years as a first responder in New York, which included service as a flight paramedic. He was the Commander of a federal medical response team, based in New York, and has extensive experience deploying to natural and man-made disasters nationwide.

He holds an undergraduate degree from the State University of New York and a graduate degree from the Naval Postgraduate School.