During his stay in the United States, he worked at Credit Suisse First Boston in the Mergers & Acquisitions Group in New York City.
During his tenure, Mali was in charge of the execution of the privatisation process in the Republic of Serbia and preparation of the various laws in this field.
[12] He is the Chartered Financial Analyst (CFA) and member of CFA Institute, Serbian Business Angels Network, Fulbright Alumni Association of Serbia, British-Serbian Business Club, as well as a member of the Golf Club Belgrade and a holder of a golf green card.
Earlier, during 2015, the Organized Crime and Corruption Reporting Project (OCCRP) and Serbian investigative journalism outlet KRIK discovered that Mali controls 42 bank accounts, registered under himself, his wife, and his three underage children.
APML suspected Mali's accounts and apartment purchases as a money-laundering scheme and reported it to the Higher Public Prosecutor's Office in Belgrade.
The Pandora Papers discovered the missing link that Mali was indeed the owner of the two offshore companies that owned 24 apartments in Bulgaria.
[17] The prosecution remained passive,[18] however, and despite Mali’s previous rejections of these accusations, Prime Minister Ana Brnabić claimed that this case does not constitute corruption as it occurred before he entered politics.
He conducted negotiations on a strategic partnership between the then state-owned company JAT and Etihad Airways that resulted in the establishment of Air Serbia.
[20] Following the ousting of Mayor Dragan Đilas in November 2013, Mali was appointed as the President of the Temporary Council of Belgrade.
[23] From the very first moment of his appointment in 2014, Mali initiated a comprehensive financial consolidation program in order to achieve sustainable fiscal stabilisation.
[24] Mali conducted a debt consolidation of public utility companies, which in the first three years of his tenure resulted in the net profit of 9.5 billion dinars.
[26] The most significant is the new hub project “Belgrade Waterfront” (total worth 3.5 billion euros), the opening of the first IKEA store[27] and Hilton Hotels & Resorts’ brand in Serbia,[28] as well as the opening of the Chinese automotive parts’ factory MEI TA Europe Ltd.[29] During Mali's tenure, Moody's Public Sector Europe (MPSE) upgraded the City of Belgrade's long-term issuer rating to Ba3 from B1; the rating's outlook has been changed to stable from positive.
[30] Mali's tenure as the Mayor of Belgrade was marked with numerous significant infrastructure projects such as completion of the Pupin Bridge over the river Danube, Košare's heroes Boulevard,[31] water factory "Makiš 2",[32] as well as the complete reconstruction of Slavija Square, Boulevard of Liberation, Roosevelt Street and Mije Kovačević Street.
[38] On 29 May 2018, he was appointed as the Minister of Finance of the Republic of Serbia in the cabinet of Ana Brnabić, after the resignation of Dušan Vujović three weeks earlier.
At the beginning of his tenure as the Minister of Finance, Mali has emphasised the two main goals; maintenance of the macroeconomic stability and achievement of the greater economic growth.
[43] Thanks to good results, the Ministry of Finance during the corona virus pandemic helped the economy and citizens with a package of nine billion euros, which preserved the level of economic activity.
He was a member of the presidency of KK Crvena zvezda[60] and he is the honorary holder of the black belt in taekwondo 5th dan for contribution to the development of sports.