He started his professional career in the USA, in banking sector (Oak Brook Bank and Mid America Savings Bank), and later on in Polish companies HOOP S.A. and Grupa Kęty S.A. Between 2001 and 2003, he took part in realization of projects for investment funds Innova Capital and Raiffeisen Private Equity Management.
In the years 2003 – 2012 he was associated with the Capital Group of Grupa Lotos S.A., where he held high executive positions, such as CEO and General Manager in companies Lotos Oil, Lotos Parafiny, Lotos Asfalt, and Deputy General Manager of Grupa Lotos S.A. Later on, he worked in Czech Republic in the years 2012 - 2014, holding position of President of the Management Board of Ceska Refinerska – Joint Venture (Unipetrol as, Shell, Eni).
As President of the Board of Viktoria Petrol, in the years 2014-2015, he managed the investment project for crude oil production in the Republic of Tajikistan. Then, among others, he was connected with Grupa Tauron Polska Energia, where in its daughter company Biomasa he held position of President of the Board (2016). He was also President of the Board in company Orlen Oil (2016-2017), and from 2017 in company Destylacje Polskie.
Mr. Leszek Stokłosa is a graduate of Lewis University, Romeoville, USA. He holds an MBA (Marketing / Finance) title also from this university. A graduate of postgraduate studies at the European University of Law and Administration and the Gdansk Foundation for Management Development. Holder of the right to sit on the Supervisory Boards of State Treasury Companies (certificate 1259/2006).