Microsoft's Advertising Platform team is seeking a Senior Applied Scientist to work on their Copilot Chat Assistant, an AI companion that helps advertisers optimize their campaigns. This role involves leveraging cutting-edge Generative AI technology, including LLMs, agentic frameworks, and RAG systems, to build innovative solutions that directly impact Microsoft Ads' revenue metrics. The position offers a hybrid work environment with up to 50% work from home flexibility and competitive compensation ranging from $153,600 to $250,200 in the San Francisco Bay area. The ideal candidate will have strong experience in machine learning, production systems, and digital advertising, working at the intersection of AI and advertising technology. Microsoft offers comprehensive benefits, including industry-leading healthcare, educational resources, and work-life balance benefits. This is an opportunity to join a fast-moving team at the forefront of AI innovation, working with the latest technologies to solve complex business challenges in digital advertising.