Alejandro Chavez

Led a team of 4 engineers as tech lead for Lumina Workspace, an AI document editor, owning roadmap, architecture reviews, and delivery of the core product used by 85,000+ monthly active users. Designed and shipped the real-time Collaborative Canvas and Multi-Agent system, built the Knowledge RAG pipeline, and led the Inference Router migration to multi-model routing.

Owned backend and full-stack features for Home and Discover feeds, shipping new ML ranking models that lifted weekly active engagement 12% across 180M+ users. Built and scaled the Personalization Service powering Discover Weekly, Daily Mix, and AI-generated playlists, and led migration of the Recommendation Platform to a new feature store and model-serving stack.

Developed core backend services for the Airbnb Experiences marketplace, supporting 3.2x growth in bookings over 2 years. Improved the Search Ranking and Filtering system used by 150M+ annual guests, owned full-stack development of the Host Tools Dashboard, and redesigned the Bookings Pipeline for reliability.

B.S. in Computer Science from the University of Florida, with relevant coursework in distributed systems, algorithms, operating systems, machine learning, and databases.