Rúben Alexandre de Souto Santos is pursuing a PhD in Sustainable Energy Systems at the University of Coimbra, with an expected completion date in 2028. He holds a master’s degree in automotive engineering from the Polytechnic Institute of Leiria (IPL), where he conducted research focused on developing a hydrogen internal combustion engine prototype. This demonstrates his commitment to sustainable and innovative solutions in the field of engineering. His academic and professional trajectory is marked by a strong focus on applied research, teaching, and continuous specialization. Rúben has completed several technical training programs in Europe (Germany, Spain, Italy, and the Netherlands) in specialized caravan and motorhome systems, including with brands such as Truma, Dometic, Thetford, Webasto, Teleco, and Reimo. These reflect his dedication to expanding his technical expertise in advanced mobility and energy systems. Since 2018, Rúben has been serving as an adjunct invited professor at the IPL. In this role, he teaches subjects related to mechanical engineering, thermodynamics, and environmental engineering. His pedagogical approach is complemented by his hands-on industry and research experience, allowing him to bridge theoretical knowledge with practical application. Previously, he worked as a contracted researcher at the same institution, where he contributed to research projects focused on automotive engineering, thermodynamics, and fuel technologies. His main research interests include hydrogen and alternative fuels, internal combustion systems, sustainable mobility, and the intersection of environmental and energy engineering. His professional and academic record reflects a clear trajectory toward sustainable innovation in energy systems and automotive technologies. His ability to integrate academic knowledge with real-world applications makes him a strong candidate for the FCT scholarship. Through his doctoral research, he aims to contribute meaningful advancements to sustainable energy systems, with a strong focus on technological development and environmental impact mitigation.