This book constitutes the refereed proceedings of the 15th IFIP WG 5.5/SOCOLNET Advanced Doctoral Conference on Computing, Electrical and Industrial Systems on Technological Innovation for Human-Centric Systems, DoCEIS 2024, held in Caparica, Portugal, during July 3–5, 2024. The 25 full papers presented were carefully reviewed and selected from 53 submissions. The papers cover the following topics: collaborative systems; human-robot collaboration; human-centric biomedical systems; cybersecurity and safety; energy management and sustainability; intelligent computational systems; electronic systems.