Microsoft is seeking a Senior Software Engineer to join their Ads Engineering team, focusing on expanding core capabilities of the Ads serving stack that powers various Microsoft services including Bing Search, MSN, and Edge Browser shopping. This role involves working with a low-latency, high-scale geo-distributed system that includes ML inferencing infrastructure and real-time bidding components. The position offers unique challenges in optimization, feature development, and infrastructure scaling, where every millisecond counts. You'll be part of a passionate team driving innovation in ad technology, collaborating with top engineers globally. The role combines deep technical challenges with fast-paced development, making it ideal for engineers who thrive on complex problems and want to make an impact at scale. Microsoft offers comprehensive benefits, competitive compensation, and a culture focused on growth and inclusion. The position requires expertise in distributed systems, strong programming skills, and the ability to optimize complex systems while maintaining high performance standards.