Rajkamal Mishra is an AI and machine-learning practitioner with 11+ years of experience — from building AI/ML products in fast-moving startups to delivering them inside large global enterprises. He has been part of two of the world's "Big Four" firms and currently works within a third, focused on generative AI, agentic AI, and applied machine learning, along with the software development, architecture design, and end-to-end deployment that turn AI into working products. He wrote this book to close the gap he keeps meeting: many people fluent in LLM vocabulary, far fewer who understand the machinery beneath it.