CodePrepped.com
Full-Stack Technical Interview Prep Platform

Technical interview preparation platform with interactive Code Arena curricula, multi-file Code Sandbox, and custom AI Mock Interview Trainer.
The Challenge & Constraints
Engineers preparing for high-stakes interviews need rapid, interactive feedback loops combining live coding, algorithmic verification, and realistic AI behavioral/system design interview simulation without clunky external dependencies.
Engineering Solution
Built with Next.js App Router, Neon Serverless Postgres with Drizzle ORM, and ultra-fast LLM streaming inference. Designed an interactive multi-file Code Sandbox, track-based progression engine, and intelligent AI interviewer with custom rubric grading.




Key Innovations & Highlights
- AI Mock Interview Trainer with real-time audio/text prompt streaming
- Multi-tab Code Sandbox with live preview and isolated JavaScript console
- Drizzle ORM + Neon Auth architecture with branching-ready database migrations
Delivered Outcomes
- ✓Shipped a production-grade full-stack platform with authentication, streaks, and progress persistence.
- ✓Integrated instant AI coaching for job specs, algorithm breakdowns, and behavioral interviews.
- ✓Delivered sub-second page transitions and zero-overhead local developer experience.
Technology Stack
View Live Project
Explore the production implementation at codeprepped.com