Ukrainian President Petro Poroshenko granted citizenship to Abromavičius, Natalie Jaresko and Alexander Kvitashvili on 2 December 2014 to allow them to serve as ministers in the Second Yatsenyuk Government.

Under his leadership a completely new Electronic Public Procurement System Prozorro[11] was launched, which received multiple international awards and recognition and saved billions of Hryvnias.

He also kick started a major State Owned Enterprise reform that included totally new CEO selection process and helped form a new and first truly independent Board of Directors at Naftogaz.

[13] On 3 February 2016, Abromavičius announced his resignation, he claimed that the key reason was a conflict with Ihor Kononenko, who was the deputy head of the Bloc of Petro Poroshenko parliamentary faction.

[17] Nine Western ambassadors signed a statement (published on the official website of the Embassy of Sweden) on 3 February 2016 that stated they were "deeply disappointed by the resignation" because Abromavičius delivered real reform results for Ukraine.

[2] Currently Aivaras holds positions of Chairman of the Board in Agro Region, Ukrainian Corporate Governance Academy[22] as well as PN Project in Riga.