I worked for LG Electronics headquarter lab in Korea for some time and I spent 5 years living and studying there. I do speak Korean and knew very well about their culture. Because of these, I had some good relationship with those korean members. If LZ is in US or any other Western countries, I don't suggest you go there for this position. Not only because you might have to learn another language, but you have to make your self adjust to their culture, which is very military.
I am not sure how good they can pay you, in Ph.D case, they would give you
maximum 3500,000Won, in Master case, at most 3000,000Won, which is not
comparable with US at all, because living expense in Korea is very high,
even though the company would give you some kind of dormitory. Food is not
good at all, you cannot imagine the life eating in the company from morning
to dinner.
If I were you, at least I would try my best to obtain some green card in US
at first and accumulate several experience. Samsung or LG, life there just
like a bitch.