Hashton
EdTech SaaS2025—2026 · Founder & Lead Architect

CodePrepped.com

Full-Stack Technical Interview Prep Platform

CodePrepped.com

Technical interview preparation platform with interactive Code Arena curricula, multi-file Code Sandbox, and custom AI Mock Interview Trainer.

Sub-50msAI latency
100%Serverless Postgres
12+ TracksCurricula

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.

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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

Next.jsTypeScriptNeon PostgresDrizzle ORMBetterAuthGroq AI

View Live Project

Explore the production implementation at codeprepped.com

Visit Live Site ↗