Janić was elected to the Vojvodina assembly in the 2012 Vojvodina provincial election for the Kula constituency seat. The DS won the election, and Janić served as a government supporter. He was also elected to the Kula municipal assembly in the concurrent 2012 Serbian local elections, although he resigned his mandate on 28 May 2012.[3] In the provincial assembly, he was a member of the committee on petitions and proposals and the committee on health, social policy, and labour.[4]
Vojvodina switched to a system of full proportional representation for the 2016 provincial election. Janić was given the forty-first position on the DS coalition's list and was not re-elected when the list won only ten mandates.[5]