You already have over 5 years of experience in marketing, right? Then you don’t need to study again at a Korean university.
Just make sure you can prove your experience with some documents or certificates. To work here, you’ll need an E-7 visa, which has to be sponsored by a company. So if you find a company that wants to hire you and they can sponsor your visa, it’s definitely possible to work in Korea 😊 But honestly, it’s very hard to find a job here without speaking Korean.
If you don’t know Korean yet, I’d suggest coming first with a D-4(language study) visa to learn the language. After that, job hunting will be much easier!

Wow, that’s amazing having 6 years of experience already! From what I know, if you’re currently abroad, it’s often helpful to actually come to Korea to attend interviews in person. Many people start by coming on a tourist visa while job hunting, or apply for a job-seeking visa (D-10) to look for work more officially. Once you get a job offer, you can apply for an E-7 visa, which is the typical work visa for professionals in Korea. Actually, a lot of foreigners first come to Korea as university students — not necessarily because they need more education, but because it's often easier to get a work visa later if you already have a Korean degree and language ability. But with your experience in marketing and social media, I think you definitely have a shot — especially if you’re open to working at companies looking to expand globally or target international markets!