Sherwood Callaway (@shcallaway) is a second-time YC founder building @sazabi, an AI-native observability platform that helps engineers understand and fix production issues using AI. After years debugging production systems at companies like Brex, and building and exiting his first startup, he set out to fix one of the most painful parts of software: understanding what’s actually happening in production. Sazabi analyzes logs and answers questions like “why is production down?”, turning hours of…