Krzysztof Madaj graduated from Bydgoszcz University of Science and Technology with a degree in Chemistry and Chemical Technology. He also completed postgraduate studies in Public Relations in Practice at Kozminski University in Warsaw.

From 2005 to 2022, he worked at the Radioactive Waste Management Plant in Poland, progressing from a Radiation Protection Specialist to Head of the Radioactive Waste Repository and ultimately to Managing Director of the Radioactive Waste Management Plant.

During this period, he was actively involved in radioactive waste management activities, public awareness initiatives concerning radioactive waste in Poland, and communication with the local community in Rozan, where the National Radioactive Waste Repository is located.

Since 2023, he has been working at the Institute of Nuclear Chemistry and Technology (INCT) in Warsaw, where he is involved in activities related to nuclear energy and radioactive waste management.

He is also the Editor-in-Chief of Progress in Nuclear Technology.