Jarosław Milewski works at the Warsaw University of Technology's Faculty of Power and Aeronautical Engineering, specifically in the Institute of Heat Engineering. He serves as the Head of the Power Division at the Institute of Heat Engineering, Editor-in-Chief of the Journal of Power Technologies, and a Member of the Editorial Board of Applied Energy. He also holds the position of Director of the Hydrogen and Fuel Cells Center at the Institute of Applied Research. His expertise includes fuel cell research (Molten Carbonate Fuel Cells—MCFCs—and Solid Oxide Fuel Cells—SOFCs), as well as other power sources, hybrid systems, advanced power systems (hydrogen-based), and steam/gas turbine power generation systems. He has considerable experience collaborating with the power engineering industry. He has authored and co-authored over 300 publications and 5 or more patents. He teaches courses on turbomachinery, turbomachinery theory, environmental protection, numerical tools in power plant simulations, hybrid systems, and more.