KAYAK is a travel metasearch engine founded in 2004 that scans hundreds of travel sites at once so users can compare flights, hotels, rental cars and vacation packages in a single place. The platform processes billions of searches a year for millions of leisure and business travellers worldwide. Rather than selling travel directly, KAYAK aggregates and compares options from third-party sites, displaying prices without hidden fees.
The engineering work spans search engine technology, web data aggregation and artificial intelligence. Recent products include KAYAK.ai, an AI-powered tool that helps travellers narrow down options in seconds, and a conversational search experience built on natural-language processing. Building a metasearch layer over hundreds of external travel sites requires systems that can ingest, normalise and rank large volumes of rapidly changing pricing and availability data at scale.
The company employs more than 800 people across 15 international offices and manages seven travel search brands. It is part of the Booking Holdings portfolio. KAYAK describes a flexible hybrid work model, with staff able to work in-office or remotely, and states values of boldness, ownership and winning together.
