Lesson 4 · 13 min
System design — a RAG product
"Design a help-center search for a B2B SaaS company." The structured walk-through that hits every checkpoint a senior interviewer expects.
The brief
"You're at a B2B SaaS company. The help center has 5,000 articles. Customers complain that search returns the wrong article. Design a RAG-based search that does better. 30 minutes."
This exercise is testing whether you've shipped real RAG, or read a tutorial.