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LAYER BY LAYER · A NEWSLETTER FROM AI SCHOOL 369
Production AI, explained simply. In 7 minutes, twice a week.
One concept and one working project in every edition, written for engineers who ship. Real production failures, the code that fixes them, and nothing you cannot run yourself.
Join free and get the AI Engineer Interview Pack instantly: 100 questions with model answers, 139 pages. Then a new edition every Tuesday and Friday, 8 AM Central. Free forever. Unsubscribe anytime.
Not ready? Read Edition 0 first and decide in 7 minutes: "Your RAG did not notice the document changed".
Every edition ships with a diagram and a runnable project. This is Edition 0: the refresh loop that catches stale documents.
What lands in your inbox
The Concept. One production AI idea, taken apart layer by layer, in plain words.
The Build. A runnable GitHub project with every edition. Run it, break it, keep it. The code is public.
The Failure. A real way this breaks in production, and the guardrail that stops it.
Inside your free Interview Pack
100 top AI Engineer interview questions with model answers, across six categories: Agentic AI (25), RAG Systems (20), AI System Design (15), Evals and LLMOps (15), Data Engineering for AI (10), Scenario and Behavioral (15). Answers written the way interviewers grade them: the trap, the model answer, and the follow-up twist.
Coming up
Edition 1: Your RAG did not notice the document changed, the full build. Edition 2: The agent tool loop, taken apart. Edition 3: Reranking, the second pass that finds relevance.
Quick answers
Is it really free? Yes. Every edition and the full pack, free. No card, no trial clock.
How often will I hear from you? Twice a week, Tuesday and Friday mornings Central. Nothing else.
Who is this for? Engineers building or interviewing for AI roles. If you want hype and headlines, this is not your newsletter.
Start with the pack. Stay for the builds.
Scroll up and join free.
From AI School 369 · Projects public on GitHub · Daily videos on YouTube @aischool369
