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Artificial intelligence is changing how we build software, but the engineering principles behind reliable systems have not changed. This book teaches those principles through the design and implementation of Querybase, a production-ready AI search and analytics system built entirely in Python. You'll build a pipeline that classifies a question, retrieves relevant evidence through embedding-based search, generates grounded answers, and turns every interaction into insight about what your content is missing. Along the way, the focus stays on the architecture beneath it: separation of concerns, layering, data contracts, validation, evaluation, and testing.

Whether you are an experienced Python developer exploring AI or a software engineer building maintainable LLM applications, this book provides both the practical skills and the architectural mindset needed to design modern AI systems with confidence.

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Kick off your book project, get started with GhostAI, get better at marketing, or spend the day doing all three! Free live workshops on Zoom. Saturday, June 27, 2026.

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