As Vice-President of the National Assembly of the Republic of Serbia, he was one of the main observers of the electoral process in a referendum on annexation of Crimea by the Russian Federation.

Value of his business undertakings reaches 100 million dollars, making him officially the richest Serbian politician.

On 29 June 2017, he was named the Minister without portfolio in the Government of Serbia in the charge of the innovations and technological development.

[2] On 3 July 2017, Aleksandr Chepurin, Russian Federation Ambassador to Serbia, made a first official visit to Popović after being sworn as minister.

[4] Popović is the owner and president of the international company ABS Electro[5] which employs over three thousand people, engaged in the production of electrical-technical equipment, creating advanced engineering solutions for a variety of industries such as electrical power, shipbuilding, oil, gas, metal, mining, and others.