Non-teaching jobs are not especially easy to come by in Korea, and generally require an exceptionally high level of education, fluency in Korean, a business partner, or personal wealth. Part-time work is also technically illegal, but this does not stop people from doing the odd job here and there in freelance translating, acting, and so on.
To work for a foreign company in Korea is somewhat difficult, as they are more likely to send somebody from within the company to Korea rather than pick up a foreigner living in Korea. Working for a Korean company is somewhat easier, but usually much lower paying. People in fields such as IT, certain types of electrical engineering, and technical writing can find jobs.
Korea Job Finder is one site that has non-teaching jobs for foreigners. You can search for "non-teaching jobs" at the top of the page to view all positions that are currently available. Worknplay also sometimes posts non-teaching jobs, though you have to search through multiple job categories. http://seoul.craigslist.co.kr/ is also a good resource if you're looking for a specific type of job. http://www.seoulprofessionals.com has a variety of both teaching and non-teaching positions. Read more about finding a job in Seoul .
Visas for doing jobs other than teaching are H-1 (Working Holiday), D-8 (Business Visa), E-7 and E-3
This article is a stub. You can click on the edit button above to expand and help it grow.