Very recently I found myself helping more and more fellow engineers with their System Design Interview. But I can't help everyone, so I decided to tinker with Google AI Build and their Gemini model to build AI Mock Interviewer.

The results of few hours of vibe coding is a local BYOK (Bring Your Own Key) AI Mock Interviewer that I open for free.

What's needed is only a free Google Studio API Key and use it in this page https://sistemas.mpj.io.

Attached also a video on how I'm using it myself on a simple TinyURL system design problem.

There are more things planned to this from transcripts, stats, request for direct feedback from me, and many more. Would you use this or similar tool? Help me shape this product by sharing your thoughts below.