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Pursuit of professional advancement as one's chief or sole aim: "Rampant careerism, which makes many a work place a joyless site, was in check" (Mary McGrory).
ca·reer′ist adj. & n.
ca•reer•ism(kəˈrɪər ɪz əm)
devotion to a career, often at the expense of one's personal life or ethics.
the characteristics associated with one who advances his career even at the expense of his pride and dignity. — careerist, n.See also: Behavior