Mr. Josiah Orji is an applied mathematician specializing in differential equations, mathematical modeling, and numerical simulation, with a focus on biological and medical applications. He excels in translating complex biological processes into mathematical frameworks, conducting analytical and computational analyses, and preparing findings for publication. Currently pursuing an M.Tech. in Applied Mathematics (Distinction) at the Federal University of Technology, Akure, his dissertation explores the modeling and optimal control of malaria transmission dynamics with the impact of an effective vaccine. He holds a B.Tech. in Industrial Mathematics (First Class Honors) from the same university. His research has been published in peer-reviewed journals, emphasizing malaria and schistosomiasis modeling, and he possesses strong programming skills in MATLAB, Maple, and Python. A PTDF scholar and recipient of multiple academic awards, including the Prof. Reuben Olufenwa Ayeni Award and a NAMCUS Bronze Medal, Josiah has teaching experience at both pre-degree and secondary levels and has served in leadership roles such as President of the Watchman Catholic Charismatic Campus Fellowship. His research interests include mathematical biology, optimal control theory, computational mathematics, and data-driven approaches to disease modeling. He is proficient in LaTeX and web technologies (HTML, CSS, JavaScript), a member of professional bodies such as Black in AI and ResearchGate, and remains committed to advancing interdisciplinary research in mathematics, data science, and biomedical systems while mentoring future scientists through teaching, tutoring, and community engagement.