He previously served as Armenia's ambassador to the Holy See, Sovereign Military Order of Malta and Portugal.

[3][4] On 10 December 2013, Minasyan was appointed as Ambassador of Armenia to Sovereign Military Order of Malta (residence in Vatican).

[7][8] On 1 November 2018, Minasyan was recalled from office of Ambassador of Armenia to the Holy See, Sovereign Military Order of Malta and Portugal.

The State Revenue Committee seized the businesses owned by or connected with him, including the remnants of the media holding company PanArmenian, a hydropower plant in the Lori region, the largest shipping company in the country, two luxury hotels in Yerevan, and the popular café chain Jazzve.

[12] In September 2020, the Yerevan Court of General Jurisdiction approved the motion on arresting Minasyan for financial embezzlement and legalization of property obtained by illegal means.