Sheryn Lee is a Director at TBox Sweden AB, a big data analytics company based in Stockholm. Before coming to Stockholm, she was an Analyst for the Office of National Intelligence for the Australian Government, Australia’s principal advisory agency to the Prime Minister on intelligence matters and the convenor of Australia’s national intelligence community.

As a researcher, she has worked at the Swedish Defence University and Macquarie University, Sydney. She has also held fellowships at the Asia Programme at the Swedish Institute for International Affairs, the Griffith Asia Institute, CSIS Pacific Forum and the International Institute for Strategic Studies' Asia office in Singapore. Her research focused on strategic concepts and the foreign and defence policies of Indo-Pacific countries, namely Taiwan, Japan, and Australia. Her first book, Explaining Contemporary Military Modernization: The Myth of Asia's Arms Race (Routledge, 2021), examined the political motivations for setting defence capabilities in the contested waters of Asia and the implications for arms racing theory. She spoke about it at the Sydney Opera's Festival of Dangerous Ideas, and its findings were commissioned as an Australian Strategic Policy Institute report.

Sheryn has published in the Texas National Security Review, Survival, the RUSI Journal, and the Australian Journal of International Affairs. She has also provided commentary for TIME, The New York Times, ABC News and The South China Morning Post. Her research has also been cited in Der Spiegel and The Wall Street Journal. She is a regular contributor to the East Asia Forum.