Dr. Carl Haikarainen is a postdoctoral fellow at ÅAU. He has a M.Sc. degree in chemical engineering from the same university with a thesis on blast furnace modelling and analysis carried out in cooperation with Tata Steel, Jamshedpur. His doctoral thesis from ÅAU in 2020 was on energy systems optimization. As a postdoctoral fellow he has participated in many research projects related to hydrogen-based ironmaking optimization and the green transition in the steelmaking industry, including national projects (Towards Fossil-Free Steel 1 & 2) and projects funded by Horizon Europe (MaxH2DR)