Why this build, here
“It seemed fine when I tried it” is how most AI apps ship, and how most fail. Employers want engineers who can show a number that goes up when the app gets better.
The build, step by step
Write forty questions
Score retrieval on its own
Score answers
Find out why it fails
Run it on every change
The steps, checks and practice open with a code
You can see what this lesson builds. The detail of each step, the finished-when checks and interview scoring come with the K850 practice, along with weekly build sessions and code review.
Read and run
Interview practice
Questions on this topic from AI Engineering Interview Questions, company-wise, with the companies it lists. Write your answer the way you would say it; Jev scores it and DeepSeek tells you what to add.
Scoring opens with an access code. You can still read the questions and prepare.