An AI-Powered Platform for Mock Interviews and Career Preparation Using OpenAI (LLM’s) and Google MediaPipe

We present a comprehensive AI-driven platform for interview preparation, built with the MERN stack, that integrates mock interviews, resume-building, and aptitude practice into a single application. Users can customize mock interviews by type (technical, HR, behavioral), difficulty, and job role. Interview questions are generated in real time from the user’s resume using the OpenAI ChatGPT API. Real-time facial expression and confidence feedback is provided via the Google MediaPipe Face Mesh model, displayed alongside the interview interface. The system also features a GitHub-integrated resume builder and an aptitude module covering Quantitative, Verbal, Logical, and Non-Verbal reasoning. Secure authentication is implemented with JWT tokens, and a dashboard presents performance analytics and personalized feedback. In preliminary testing, the system achieved prompt question generation (≈3.8s), high face-analysis FPS (24–30), and strong user satisfaction.