Marek Dietl holds a degree from the Warsaw School of Economics and a PhD from the Institute of Economic Sciences, Polish Academy of Sciences. During his PhD programme, he was a fellow at the University of Glasgow. He is Assistant Professor at the Warsaw School of Economics (SGH) since 2012. In 2012-2013, he was a fellow at the University of Economics, Essex. He completed a two-year programme in finance: EY Executive Studies in Finance.

In 1999-2008, Marek Dietl worked with the international consultancy Simon-Kucher & Partners, where he was promoted from Intern to Proxy to Leader of the Warsaw office. In 2008-2012, he was with Krajowy Fundusz Kapitałowy S.A., initially as Investment Manager and later as Deputy Director for Investments.

Marek Dietl has served on the Supervisory Boards, Audit Committees, Investment (Selection) Committees of more than 20 companies including Atende S.A., Bank Gospodarstwa Krajowego, BSC Drukarnie Opakowań S.A., Mercator Medical S.A., Polish Agency for Enterprise Development, PZU Witelo FIZAN.

Marek Dietl has served as an advisor and expert: Advisor to the President of Poland, Advisor to the President of the Energy Regulatory Office, Mediator at the Court of Arbitration of the Polish Financial Supervision Authority, Member of the Board of Economic Education at the National Bank of Poland, Expert of the Business Centre Club and Instytut Sobieskiego. He has headed Financial Instrument Task Forces appointed by the Director of the National Centre for Research and Development.