Dr. S. Raja is an Assistant Professor (Research) at Saveetha Engineering College, Chennai, India. He previously served as Director of the Centre for Advanced Multidisciplinary Research and Innovation (CAMRI), Chennai Institute of Technology. He obtained his Ph.D. in Additive Manufacturing Technologies from Vellore Institute of Technology, India, in 2024, and holds an M.E. in Industrial Engineering from Anna University. His research interests include additive manufacturing, fused deposition modelling, polymer composites, sustainable and biodegradable materials, materials science, industrial engineering, and manufacturing technologies. His expertise also encompasses artificial intelligence, machine learning, multi-criteria decision-making, process optimization, and material characterization. He has published more than 105+ research articles in SCI- and Scopus-indexed journals and holds multiple patents. He serves as an editorial board member and associate editor for several international journals and is a recognized Anna University research supervisor. He was recognized among the World's Top 2% Scientists in the Stanford University rankings for 2025 and 2026.