AI Voice Agent Interview Platform

A modern, AI-powered interview practice platform that enables users to conduct realistic voice interviews with an AI interviewer. Built with Next.js, Firebase, and Vapi AI for real-time voice interactions.

🚀 Features

Core Functionality

• AI-Powered Voice Interviews: Conduct realistic interviews with an AI interviewer using natural voice conversations
• Real-time Speech Recognition: Powered by Deepgram for accurate transcriptions
• Natural Voice Synthesis: Uses 11labs for human-like AI voice responses
• Interview Generation: AI-generated interview questions based on role, level, and tech stack
• Comprehensive Feedback: Detailed scoring and feedback across multiple categories
• User Authentication: Secure Firebase-based authentication system

Interview Types

• Technical Interviews: Focus on technical skills and knowledge
• Behavioral Interviews: Assess soft skills and cultural fit
• Mixed Interviews: Combination of technical and behavioral questions

Feedback System

• Communication Skills: Evaluation of verbal communication abilities
• Technical Knowledge: Assessment of domain-specific expertise
• Problem Solving: Analysis of logical thinking and solution approaches
• Cultural Fit: Evaluation of team compatibility and values alignment
• Confidence and Clarity: Assessment of presentation and self-assurance

🛠️ Tech Stack

Frontend

• Next.js 15: React framework with App Router
• TypeScript: Type-safe development
• Tailwind CSS: Utility-first CSS framework
• Radix UI: Accessible component primitives
• React Hook Form: Form handling with validation
• Zod: Schema validation

Backend & AI

• Firebase: Authentication and database
• Vapi AI: Voice AI platform for real-time conversations
• Google AI SDK: AI-powered question generation
• Deepgram: Speech-to-text transcription
• 11labs: Text-to-speech synthesis

Development Tools

• ESLint: Code linting
• PostCSS: CSS processing
• Turbopack: Fast bundling for development

🚀 Getting Started

Installation

1. Clone the repository

   git clone https://github.com/yourusername/ai-voice-agent-interview-platform.git
   cd ai-voice-agent-interview-platform/my-app

2. Install dependencies

   npm install

3. Set up Firebase

   • Create a Firebase project
   • Enable Authentication and Firestore
   • Download service account key and add to environment variables

4. Configure Vapi AI

   • Sign up for Vapi AI
   • Create a workflow for interview generation
   • Add API key to environment variables

5. Run the development server

   npm run dev

6. Open your browser Navigate to http://localhost:3000

🎯 Usage

Starting an Interview

1. Navigate to the interview page

   • Click "Start an Interview" on the homepage
   • Or visit /interview directly

2. Configure interview parameters

   • Select job role (e.g., Frontend Developer)
   • Choose experience level (Junior, Mid, Senior)
   • Specify interview type (Technical, Behavioral, Mixed)
   • Add relevant tech stack
   • Set number of questions

3. Begin the interview

   • Click "Start Call" to begin
   • Speak naturally with the AI interviewer
   • Answer questions as you would in a real interview

Reviewing Feedback

1. Access feedback after interview completion

   • Navigate to /interview/[id]/feedback
   • View detailed scoring across categories
   • Review strengths and areas for improvement

2. Track interview history

   • View all past interviews on the homepage
   • Access feedback for any completed interview

Built with ❤️ using Next.js, Firebase, and Vapi AI