"그녀는 엔지니어로 취직해요."
Translation:She gets a job as an engineer.
기사 and 공학자 are the non-English words for engineer. It seems that the first one is more popular in the North, although I'm unable to prove that. Anyways, 기술자 is a technician, not an engineer.
공학 is engineering. When i ask people in korea what their major is they often say 공학