In 1994–2005, she served as Corporate Controller, Treasury Director and Director of Planning at American Restaurants sp. z o. o. She was a member of supervisory boards and management boards of subsidiaries of this franchise conglomerate from the real estate and restaurant sector. Over 10 years, the company expanded from one restaurant and two owned buildings in Poland to several hundred restaurants and real estate agencies She was responsible for financial aspects of mergers & acquisitions, developing business strategies with the executive team and managing the company’s operations. She restructured the company's financing and obtained the necessary funds for the company’s development.
She has been working with Selena Group since 2005. In 2005–2011, she held the function of Vice President of the Management Board – Chief Financial Officer at one of Selena Group’s subsidiaries, a holding entity for 19 foreign affiliates. She took part in developing and implementing financial strategies and supervised the process of consolidating financial statements and reporting. She was responsible for preparing and monitoring budgets and long-term financial plans. In 2011, she was appointed Selena’s Group Controller for about 30 subsidiaries. She was responsible for implementation of the new ERP system – Microsoft Dynamix AX as the project’s architect. Since 2015, she has been Head of Group Treasury at Selena Group.
On 19 November 2018, the Supervisory Board of Selena FM S.A. appointed Ms Elżbieta Korczyńska to the Management Board.