Olin

Welcome to Olin, an AI interview assistant. Made for the future of AI-driven interviews.

Note

This project was awarded first place in the BYU-Idaho I-Hack 2025 competition. Learn more.

Features

• AI-Powered Mock Interviews: Conduct realistic practice interviews with AI-generated questions tailored to your job role
• Dual Interview Modes:
  • Text Mode: Type your answers for a traditional interview experience
  • Speech Mode: Practice verbal communication with voice input/output for authentic interview simulation
• Google Gemini Integration: Leverages Gemini 2.5 Flash for intelligent question generation and Gemini TTS for natural voice synthesis
• Smart Question Generation: Dynamic interview questions based on job title, company, and description with adaptive follow-ups
• Real-time Audio Processing: Live audio visualization with animated blob interface during voice interviews
• Automated Interview Grading: Comprehensive feedback system that evaluates responses on clarity, relevance, depth, examples, and confidence
• Interview History: Track and review past interview sessions with detailed feedback and scores
• Secure Authentication: Email-based OTP verification system with session management using JWT tokens
• Responsive Design: Fully responsive interface that works seamlessly across desktop and mobile devices

Technologies Used

• Next.js 16: React framework with App Router for server-side rendering and API routes
• React 19: Modern React with hooks for building interactive UI components
• TypeScript: Type-safe development for improved code quality and developer experience
• Tailwind CSS 4: Utility-first CSS framework for rapid UI development
• shadcn/ui: High-quality, accessible React component library built on Radix UI
• Google Gemini AI: Advanced AI models for question generation (Gemini 2.5 Flash) and text-to-speech (Gemini TTS Preview)
• MongoDB: NoSQL database for storing user data, interviews, and conversation history
• Jose: JWT token handling for secure session management
• React Hook Form + Zod: Form management with schema validation
• Web Speech API: Browser-based speech recognition for voice input
• React Email + Resend: Email template creation and delivery for OTP authentication
• Vercel Analytics: Performance monitoring and user analytics
• Lucide React: Beautiful, consistent icon library
• Sonner: Elegant toast notifications for user feedback

Installation

1. Clone the repository:

   git clone https://github.com/eglenn-dev/i-hack-2025.git

2. Navigate to the project directory:

   cd i-hack-2025

3. Install dependencies:

   npm install

4. Start the development server:

   npm run dev

5. Open your browser and go to http://localhost:3000.