Since July 12, 2019, she has served as a member of the Board of Directors of PKP S.A.. Previously, she held the position of Undersecretary of State at the Ministry of Investment and Development. In the structures of the ministry, she was responsible for the implementation of EU funds for major infrastructure investments (Infrastructure and Environment Program), coordination of the Juncker Plan in Poland and matters related to public-private partnerships. Deputy Minister Zielińska worked as deputy director of the Infrastructure Programs Department since April 2016, first at the Ministry of Development and then at the Ministry of Investment and Development. She has extensive management experience, both in the public and private sectors. Before becoming deputy director at the ministry, she was director at, among others, the Center for EU Transport Projects and PKP S.A., where she managed railway stations. She has worked in managerial positions in private enterprises and state-owned companies. She is a graduate of the Faculty of Mechanical Engineering at the Warsaw University of Technology, where she earned a degree in mechanical engineering. She also completed Postgraduate Management Studies at Warsaw University.