[5] In 2002 Marchenko graduated from the State Tax Service Academy with the Master's degree in Public Finance Management (diploma with honours, the President of Ukraine scholar in 2001–2002).

[7] In 2011 Marchenko participated in the Management and Leadership Program at Harvard Kennedy School, and he began his work at the Presidential Coordination Center of Reforms Implementation.

Mr. Marchenko coordinated the preparation of a package of legislative bills aimed at changing the budgeting and improvement of autonomy of healthcare institutions.

The decision on his appointment was unanimously approved by all member countries during the annual autumn joint session of the IMF and the World Bank in Washington.

In a statement regarding his appointment, Serhiy Marchenko noted:[19] [...] This happened for the first time in 30 years of Ukraine's membership in the World Bank and the IMF.

The new status will enhance the effectiveness of cooperation with international financial organizations and the member countries of the World Bank and the IMF.Since 26th January 2023, Marchenko is co-chairman of the Multi-Agency Donor Coordination Platform for Ukraine.