Deddy Rahmadi is a mathematics lecturer at UIN Sunan Kalijaga, specializing in graph theory and its computational applications. His research focuses on metric dimension and its variations on k-token graphs, with broader interests in applied linear algebra, computer vision, neural networks, and creative mathematical applications such as fractal-based batik design. He has led various academic and community initiatives, including technology-based educational projects that have reached thousands of users. Guided by the motto "Empowering Knowledge, Shaping the Future", he is dedicated to integrative, innovative, inclusive, and continuously improving approaches in education and research.