Sławomir Stelmach, D.Sc., Eng., is a Professor at the Institute of Energy and Fuel Processing Technology (ITPE), where he serves as Scientific Secretary. He specializes in chemical engineering and environmental engineering. He began his professional career as a technologist at ZCh "Organika-Azot" S.A. in Jaworzno (1994-1995) and has been affiliated with the Institute of Energy and Fuel Processing Technology (formerly the Institute for Chemical Processing of Coal) since 1995. His work primarily focuses on research, development, and commercialization of thermal conversion processes for solid fuels, including pyrolysis, gasification, and combustion. Professor Stelmach has authored or co-authored over 150 publications in national and international journals, monographs, and conference proceedings, and holds several patents. He obtained his habilitation degree in 2019 from the Faculty of Environmental and Power Engineering at the Silesian University of Technology. He has participated in numerous national and international R&D projects, including successful technology implementations, and maintains active collaborations with scientific centers both in Poland and abroad.