Buildex – Interactive system design practice with AI feedback

Show HN: Buildex – Interactive system design practice with AI feedback

Buildex – Interactive system design practice with AI feedback is a business in show hn launch.

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Hey HN, I built Buildex (https://buildex.dev) to help engineers practice system design interviews interactively. The problem: System design prep usually means reading blogs or watching videos passively. There's no way to actually practice designing systems and get feedback. How it works: - Pick a challenge (URL shortener, rate limiter, chat system, etc.) - Drag-and-drop components onto a canvas to design your architecture - Connect them to show data flow - Submit and get scored on efficiency, cost, and reliability - AI evaluates your design and gives specific feedback Tech stack: - Frontend: React + Vite - Backend: Go - Database: PostgreSQL - AI: Claude API for design evaluation - Payments:

Buildex – Interactive system design practice with AI feedback is positioned in show hn launch, a segment that rewards a clear, focused offering.

Directory data places it at the Show HN launch stage.

Website: buildex.dev