Principal Engineer, AI-Driven Indexing & Retrieval

Pinterest is seeking a Principal Engineer to shape the technical strategy for Indexing & Retrieval Infrastructure across Core, Ads, and Shopping. You will drive architecture modernization, mentor engineers, and partner with leaders to deliver high-scale, high-quality candidate generation across discovery surfaces. You will leverage AI to accelerate analysis, design exploration, and platform insights, while maintaining strong focus on correctness, privacy, and operational excellence.