Agentic AI and Autonomous Systems Engineering is a practical and comprehensive guide to designing, building, and evaluating intelligent AI agents. Covering agent architecture, memory, planning, reasoning, tool use, multi-agent systems, prompt engineering, and ethical considerations, the book combines clear theoretical explanations with hands-on Python and Google Colab experiments. Readers will learn how autonomous agents perceive, plan, act, and reflect while exploring modern agent frameworks, evaluation techniques, and real-world applications. Designed for students, educators, researchers, and software professionals, this book equips readers with the knowledge and practical skills needed to develop next-generation autonomous AI systems.