Arunachalam Barathidasan is a software engineer focused on AI systems, data engineering, and distributed application design. He holds a Master of Science in Computer Science from the Illinois Institute of Technology. Previously, he was a security infrastructure engineer at Valeo and has a deep passion for entrepreneurship. He has cofounded two startups – TriZ AI and Learnchain. His work centers on building high-performance data pipelines, agent-based systems, and scalable backend architectures, with experience spanning cloud-native infrastructure, observability, and full-stack application development. He has developed Websites, ETL pipelines, low-latency AI observability platforms, and vision-driven autonomous agents with an emphasis on system reliability, performance optimization, and traceability. At COSMOS, he is interested in applying data-intensive and AI-driven approaches to analyze complex social and networked systems, contributing to impactful research at the intersection of data engineering and real-world problems. His hobbies include playing soccer, video games, and being a tech enthusiast.