Senior Back End Engineer, Platform

About Us At You.com , we are building the AI Search Infrastructure that powers modern AI systems. Our goal is to create the trusted knowledge layer that agents, applications, and enterprises rely on to retrieve real-time, accurate, and citation-backed information. Our platform combines proprietary vertical indexes with LLM-optimized retrieval systems to power AI agents, applications, and enterprise workflows. We are solving hard problems across search, large language models, and large-scale infrastructure to make AI systems more reliable, transparent, and useful. Our team includes engineers, researchers, product builders, and operators who care about solving meaningful problems and delivering real-world impact. Whether you are improving core infrastructure, shaping product experiences, or helping bring new AI capabilities to market, your work will help define how modern AI finds and uses knowledge. About the Role We're looking for a strong, generalist backend engineer to help build the platform behind our AI search products and infrastructure that already supports millions of queries a day. The role spans a lot of ground: scalable systems, the APIs and SDKs developers build on top of, and the billing and account infrastructure our enterprise customers need to run their business on our platform. This is a remote position open to candidates based anywhere in the United States. We give preference to candidates in San Francisco Bay Area or New York, where we have offices, but we'