Marian Lubieniecki graduated from the Faculty of Ocean Engineering and Shipbuilding at the University of Gdansk with a master's degree in engineering. He continued his education at the Institute of Flow Machinery of the Polish Academy of Sciences in Gdansk, earning a doctorate in technical sciences. He began his professional career at Philips Royal Electronics as a Mechanical Project Manager, and also worked at ABB/ALSTOM as an Aerodynamics Specialist Engineer in the Steam Turbine Research and Development Department.
He has been associated with the Warsaw Engineering Design Center almost since its inception. He was one of the first GE Aviation employees at the Engineering Design Center, where he worked as a Design Engineer for turbine engine flow parts. He held successive management positions for seven years, before establishing GE Oil & Gas's upstream technology team at EDC in 2007, which he grew into an organization of several hundred people. He then became Executive Director of the subsea technologies team.
In 2016, Marian Lubieniecki took the position of CEO of General Electric Company Polska Sp. z o.o. and Managing Director of GE Engineering Design Center.