Interview Shepherd AI is an AI-based interview preparation tool focused on software system design interviews. The tool allows users to practice interview questions that are adjusted to their skill level. It features an AI-powered virtual interviewer providing real-time corrections, feedback, and suggestions to enhance the responses of the users. The AI interviewer simulates realistic interview scenarios to provide an efficient live interview simulation experience. An interactive whiteboard feature facilitates sketching and visualizing the system designs, aiding in communicating thoughts more clearly and effectively during the interview process. Users also receive detailed post-interview feedback, with insights into their performance, strengths, and areas requiring improvement. The AI interviewer offers personalized tips to help the users improve their skills. The real-time transcription feature strengthens the overall experience by offering accurate transcripts of the user's answers and AI interviewer's questions, which is beneficial for future review and analysis. All these features together assist the users in preparation for real-world system design interviews by emphasizing areas such as clarity of communication, system design, and interview etiquette.