Dr. Jimbo is an associate professor at the Faculty of Policy Management, Keio University. He is concurrently a senior research fellow at the Canon Institute for Global Studies (CIGS) and the Tokyo Foundation (TKFD). He also serves as a director on the Board of Directors at the Civic Force, a visiting fellow at the Genron NPO and a member of the International Institute for Strategic Studies (IISS).

His main research fields are international security, Japan-US security relations, Japanese foreign and defense policy, multilateral security in Asia-Pacific, and regionalism in East Asia. He has been a policy advisor at various Japanese governmental commissions and research groups, including the Cabinet Office, the Ministry of Defense, and the Ministry of Foreign Affairs.