MockIN – AI-Powered Mock Interview Platform 🎙️💻

MockIN is an all-in-one AI-powered coding and behavioral interview simulator designed to help students prepare for real-world technical and HR interviews using cutting-edge LLM technology.

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🧠 Key Features

• 🎯 Behavioral Interview Simulation: Upload your resume → get AI-generated behavioral questions → record your response → receive real-time AI feedback.
• 💡 Coding Interview Practice: Solve popular DSA problems → submit your code → receive GPT-4 based code feedback.
• 🔊 Voice Input Support: Speak your answers, powered by OpenAI Whisper for transcription.
• 🧾 Resume-Aware Question Generation: Behavioral questions are dynamically tailored to your resume.
• ⚙️ Tech Stack:
  • Frontend: React + Tailwind CSS + Vite
  • Backend: Express.js + Node.js
  • AI: OpenAI GPT-4 + Whisper APIs
  • Code Execution: Judge0 (via RapidAPI)

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📦 Installation

1. Clone the repository:

   git clone <your-repo-url>
   cd MockIN

2. Install server dependencies:

   cd server
   npm install

3. Install client dependencies:

   cd ../client
   npm install

4. Set up environment variables:

   cp server/.env.example server/.env
   cp client/.env.example client/.env
   # Then, fill in your OpenAI and Judge0 keys

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🚀 Running the Application

1. Start the server:

   cd server
   npm run dev

2. Start the client:

   cd client
   npm run dev

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📁 Project Structure

MockIN/
├── client/          # React frontend (Vite)
├── server/          # Express backend (Node.js)
├── assets/          # Screenshots and diagrams
└── README.md        # This file

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🧱 System Architecture

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🖼️ Screenshots

Landing Page

Behavioral Interview – Transcribed Answer + Feedback

Coding Interview Simulator

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📡 API Routes (Backend)

• POST /api/generate-question: Generates behavioral question from uploaded resume
• POST /api/voice-feedback: Submits audio → transcribes via Whisper → evaluated via GPT-4
• POST /api/evaluate: Submits code and receives feedback

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✨ Future Improvements

• Add user accounts and history tracking
• Multiple question rounds (coding + behavioral)
• Real-time LLM-based mock interviewer interface

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👨‍💻 Author

Made with ❤️ by Rohit Joshi
MSCS @ USC | AI & Full Stack Developer | Summer 2026 SWE Internships Focus

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