If you don’t want to be a Foreign Service Officer (see last post on FSO jobs), but want to work at the U.S. Embassy, then take a look at the Embassy’s recruitment page: https://kr.usembassy.gov/embassy-consulate/jobs/
Admittedly, there are not many available jobs at the Embassy because people like working here. But from time to time, there is an opening, so check our website once or twice a month. When you see an announcement for an open position, and you feel that you fit those requirements, then please send us an application at that time. Recruiting takes place only for the purpose of filling our advertised vacancies. Hope to see you here!