In 1989 Maciej Piotrowski graduated from Faculty of Fundamental Problems of Technology at Wrocław University of Technology. In 1998-1990 was a student at post-graduate Foreign Trade courses at Wrocław University of Economics; from 1990 to 1991 he studied finance at the same University, and in 1990-1994, he participated in Ph.D. studies at Wrocław University of Technology. In 1995-1997 participated in Master of Business Administration University of Illinois at Urbana-Champaign co-organized with University of Warsaw (M.A. in Management and Marketing). Participated in a number of domestic and foreign seminars and courses on banking, finance and capital markets. In 1991 obtained a security broker license (in 1992, won WSE CEO Award for the best broker) and in 2004 obtained a license for candidates for supervisory board members in State Treasury companies.
In 1991-1997 gained professional experience working as securities broker, deputy director in a Broker Office, managing director in charge of investment banking in Bank Gdański S.A. From 1997 to 1999 was an investment banking director in Bank of America (Poland) S.A. In 2000-2002 was a managing director in charge of investment project funding and Deputy CEO Global corporate & investment banking in Bank of America (Poland) S.A., then from 2002 to 2007 held the following positions: CEO in TP Invest Sp. z o.o. and CEO in Towarzystwo Emerytalne Telekomunikacji Polskiej S.A. in Telekomunikacja Polska S.A. Capital Group. In 2008-2013 was Deputy CEO in charge of finance and administration in Polska Agencja Żeglugi Powietrznej, and in 2013 temporarily acted as its CEO. Since January 2014, Deputy CEO of Bank Gospodarstwa Krajowego.
He held positions in supervisory boards of various institutions, to include: Supervisory Board Chairman in Bank Gospodarstwa Krajowego, Member of the Supervisory Commission of Bank Przemysłowy in Łódź established by National Bank of Poland, Supervisory Board Member in Metro Warszawskie sp. z o.o., and since 2013 Supervisory Board Member in Enea Wytwarzanie SA.