[3] Đukanović has a Bachelor of Laws degree from the University of Belgrade and was a political commentator of some notoriety prior to his election to the assembly.

[9] In late 2014, Đukanović and fellow MP Branislav Blažić travelled on an unauthorized mission as international observers for elections in the breakaway Donetsk and Luhansk People's Republics in Ukraine.

Đukanović said that he and Blažić went on the mission as private citizens, adding that he had not informed Serbian prime minister Aleksandar Vučić of the visit and that he was "ready to suffer the consequences" if the Progressive Party disapproved of his actions.

In early 2015, Janković accused Serbia's Military Security Agency of illegal wiretapping political parties, union leaders, and judges.

[18] During the 2016–20 parliament, Đukanović was a member of the defense and internal affairs committee and the security services control committee; a member of Serbia's delegation to the NATO Parliamentary Assembly (where Serbia has observer status); the leader of Serbia's parliamentary friendship group with North Macedonia; and a member of its parliamentary friendship groups with Albania, Algeria, Argentina, Austria, Belarus, Belgium, Bosnia and Herzegovina, Brazil, Bulgaria, China, Cuba, Cyprus, the Czech Republic, France, Germany, Hungary, India, Iran, Israel, Italy, Japan, Kazakhstan, Mexico, Montenegro, North Korea, Poland, Russia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey, the United Kingdom, the United States of America, Venezuela, and the Sovereign Military Order of Malta.

He continues to serve on the security services committee and in Serbia's delegation to the NATO parliamentary assembly and is a member of the parliamentary friendship groups with Argentina, Austria, Brazil China, Cuba, Cyprus, the Czech Republic, France, Germany, Greece, Hungary, Iran, Israel, Italy, Japan, Russia, Spain, Turkey, the United Kingdom, and the United States of America.

In August 2020, he tweeted that he hoped Serbian citizens vacationing in Croatia would receive "a broken car and punctured tires, a slap or a kick in the buttocks, annoyed waiters who ignore you, the worst of insults and threats."

[27] On 21 November 2024, in the very beginning of the 2024-2025 Serbian anti-corruption protests, Đukanović tweeted "We must fight against anarchist terrorists, fake commie intellectuals, the pseudo-elite that is ravaging Serbia with anti-Serbian attitudes.

[29] The statement caused great controversy,[30] with the Commissioner for the Protection of Equality, Brankica Janković, describing it as "utterly unfounded, dangerous, and condemnable".