Sunjin Choi is a research staff member at the Institute for Defense Analyses (IDA). IDA is a Federally Funded Research and Development Center, a not-for-profit organisation chartered by the US Congress to provide research and analytical support to the federal government.

Sunjin has a Master's degree in Economics from the London School of Economics and Political Science (LSE). She is a member of the International Institute for International Studies and the Reform Club. Previously, she worked for Ambassador Harald Malmgren (former Deputy US Trade Representative) on trade and international finance issues.

Sunjin’s current research is focused upon economic, political and defense factors which impact transatlantic relationships, the defense industry, and the global acquisition environment.