A free interview kit, as a PDF and an EPUB
The AI engineer interview playbook
One system design question, design a support agent for an online shop, answered the way interviewers score it: agents, tools, RAG, evals, cost and latency.
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If it did not open, open the PDF. For a reading app, download the EPUB. Both links work for a day; the form gives you new ones any time.
Build it live, with an engineer reviewing your choices
Design Production-Grade Agentic AI Systems. An architecture for one real workflow at your company that you can take to a design review: roles, models, context, tools, approvals, failure plan and budget.
Look insidePages from the PDF, as they print.
Page 2: Contents 
Page 3: This kit answers one system design question from start to finish. 
Page 14: When should the Acme support system be an agent rather than a workflow? 
Page 20: Write the refund tool so the model knows when to call it and cannot run it alone. 
Page 41: How much does the Acme draft step cost per day? 
Page 53: The whole Acme answer on one page, with the mistake to avoid at each step.
What the interview kit covers
- 1
The interview loop, mapped
How companies interview AI engineers, which round asks you to design an AI system, and the one question this kit answers from start to finish.
- 2
Your cold answer, scored
How the interviewer runs the Acme question, and how to score your answer.
- 3
Agent or workflow
Your first answer is recorded. Now: does the Acme support system need an agent at all, and if so, how many?
- 4
Tool calling and guardrails
The steps are drawn. Which tools does the agent get, and what can it do without a human?
- 5
RAG over Acme's help docs and tickets
The agent drafts each reply from help docs and past emails. How does it find the right ones?
- 6
Evals and failure modes
How does Acme know a prompt change made the agent better, not worse?
- 7
Cost and latency under follow ups
With a busy support inbox, what does drafting replies cost a day, and how fast does the agent answer?
- 8
Level up and practise
How the same answer scores at mid, senior and staff level, how to prepare for the other rounds, and a practice plan.