🎙️ EchoHire – AI-Powered Mock Interview Platform

EchoHire is a voice-driven mock interview platform built with Next.js, Firebase, and Vapi AI. It simulates realistic job interviews and provides structured feedback powered by Google Gemini. Designed as a personal project to explore voice interfaces and full-stack development.

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🌐 Live Demo

Check out the live version here: ai-mock-interview.vercel.app

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⚙️ Tech Stack

• Next.js (App Router) – frontend & backend
• Tailwind CSS – styling
• Firebase – authentication & Firestore
• Vapi AI – voice-powered interview agent
• Google Gemini API – AI-generated interview feedback
• Zod – schema validation
• shadcn/ui – component library

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🔋 Features

• Voice-based mock interviews with AI
• Instant, structured feedback after completion
• Tracks past interviews and performance
• Role-specific technical and behavioral questions
• Clean and responsive UI
• Firebase-powered auth flow

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🚀 Getting Started

1. Clone the repo

git clone https://github.com/AndrewFesenko/ai_mock_interview.git
cd ai_mock_interview

2. Install dependencies

npm install

3. Set up environment variables

Create a .env.local file in the root of the project and add:

# Firebase Admin SDK
FIREBASE_PROJECT_ID=
FIREBASE_CLIENT_EMAIL=
FIREBASE_PRIVATE_KEY=

# Firebase Client SDK
NEXT_PUBLIC_FIREBASE_API_KEY=
NEXT_PUBLIC_FIREBASE_AUTH_DOMAIN=
NEXT_PUBLIC_FIREBASE_PROJECT_ID=
NEXT_PUBLIC_FIREBASE_STORAGE_BUCKET=
NEXT_PUBLIC_FIREBASE_MESSAGING_SENDER_ID=
NEXT_PUBLIC_FIREBASE_APP_ID=

# Vapi AI
NEXT_PUBLIC_VAPI_WEB_TOKEN=
NEXT_PUBLIC_VAPI_WORKFLOW_ID=

# Google AI
GOOGLE_GENERATIVE_AI_API_KEY=

4. Run locally

npm run dev

Open http://localhost:3000 in your browser.

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📸 Screenshots

Landing

Sign In

Sign Up

Dashboard

Interview

Feedback

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🙏 Credits

This project was inspired by Adrian Hajdin.

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