Kaushik Rajan is an applied scientist and engineer with nearly a decade of experience in the tech industry. He spent four years at Amazon (US) building production-grade ML models that directly impacted billions of dollars in revenue, and has shipped production systems across deep learning, computer vision, time-series forecasting, and econometric modeling in multiple industry verticals. His peer-reviewed research spans multi-agent AI, behavioral game theory, and cooperative systems, published in the Theoretical Computer Science and Games & Political Behavior eJournals. He has written 74+ technical articles (26K+ reads) and holds a Master's in Computer Science from NC State University. He currently runs Origin Labs, a solo startup that builds AI-powered consumer applications through agent-orchestrated workflows. He writes from a practitioner's perspective: every framework in his books comes from building real systems.