A contingent philosophy professor

In the New York Times Book Review today, Sept. 29, 2013, a letter-writer observes "that the ambiguity and multilayered meanings reflected in Continental philosophy are themselves the metaphysical point." The author of the letter, Margaret Betz, is identified by the Book Review as "a contingent philosophy professor at Rutgers University-Camden." Does that mean she is a professor of contingent philosophy -- as her letter might reflect? Or does it mean that her status as a philosophy professor is contingent? If the latter, is the contingency that her job might end at any moment? Or is this an expression of the contingency of everything, including but not limited to philosophy teaching? Just wondering.