[3] He graduated from SGH Warsaw School of Economics with a degree in finance and accounting.

[5][6][1] From 2009 to 2014, Cieszyński worked at the Polish telecommunications company Orange Polska, in its finance and marketing departments.

[2][1] In addition, from 2016 to 2018, he served as the chairman of a board supervising a corporation that the state treasury established to support Polish export activities.

[2][1] At the beginning of the coronavirus pandemic, in the middle of March, Cieszyński approved the purchase of 100,000 masks for 5 million PLN from a skiing instructor who was friends with Łukasz Szumowski, the minister of health at the time.

[1] On 14 April 2020, Cieszyński completed a deal with a former arms trade company, purchasing over 1,200 ventilators for 200 million PLN.