Do not like my job now Feb. 24,2019

(cunning is not necessarily negative.  It is often used to mean something close to "clever".  Unfortunately almost all of the one-word synonyms I can think of are not specifically pejorative.  Backstabbing is kind of awkward in this context, but the meaning is very clear.  People would also understand if you said political (which would refer to office politics), but that might be confusing to non-native speakers).