Sanjana is a senior product manager at Spotify working on Fleet Management and Soundcheck Systems. She's passionate about reducing fragmentation in tech ecosystems, building innovative solutions for developers, and collaborating with diverse and talented teams. She helped externalize the Fleet Management program in Portal, which enables teams to execute code changes across thousands of repos at once. She loves baking, traveling, and trying out new cuisines and lives in New Jersey.
Managing thousands of components across millions of lines of code is a massive challenge. At Spotify, we moved from manual multi-month migrations to a fleet-first mindset, using tools like OpenRewrite and AI-powered background coding agents to run automated, daily code refactorings and infrastructure optimisations.
This talk covers how we scaled to over one million automated changes, our evolution from deterministic recipes to agentic loops, and how we use test automation and LLM judges to maintain quality.