Ellen is a veterinarian who serves as Senior Health and Policy Specialist at EcoHealth Alliance (EHA), where she works on a variety of scientific and policy initiatives that advance the ecological health mission of the organization. She supports EHA's global health work largely through a joint research associate position with the Smithsonian Conservation Biology Institute.

Previously as Principal of Carlin Communications, Ellen provided consulting services including writing, editing, and provision of technical expertise in many areas of science and science policy. In 2013, she completed a fellowship with the U.S. Food and Drug Administration Center for Veterinary Medicine, working on data analysis and other aspects of antimicrobial resistance. Prior to that, she was senior professional staff with the U.S. House of Representatives Committee on Homeland Security (Peter T. King, NY), where for more than five years she handled medical preparedness, biodefense, and science and technology policy. That position began as an American Veterinary Medical Association/American Association for the Advancement of Science fellowship.

Ellen has also worked or volunteered as a small animal clinical veterinarian for organizations including the Washington Animal Rescue League, the American Society for Prevention of Cruelty to Animals, PetCo, and private clinics, and continues to do so, serving her interests in animal health and welfare, public health, and parasitology.

She received a Bachelor of Science in biology from the College of Mount Saint Vincent and a doctorate in veterinary medicine from the Cornell College of Veterinary Medicine.