Park Jin passed the 11th Foreign Affairs Examination in 1977 and served as a Ministry of Foreign Affairs (South Korea) Officer in 1978. From 1980 to 1983, he served as a naval officer through a course of naval cadets. He was selected for the seventh term of state-funded international studies in 1983 and earned a master’s degree in public administration at Harvard Kennedy School in 1985 and a Ph.D. in political science at Oxford University in 1993.

Since 1993, he has served as an overseas press secretary and political secretary at the presidential secretariat of the Kim Young-sam administration. Since 2002, he has served as the 16th and 17th lawmakers of Jongno-gu, Seoul, and served as the chairman of the National Assembly’s Foreign Affairs and Trade Committee, taking the lead in ratifying the United States-Korea Free Trade Agreement and passing the North Korean Human Rights Act.

In May 2022, he was appointed 40th Minister of Foreign Affairs.