Microsoft's Online Advertising division, a ~$10 billion revenue business, is seeking a Senior Software Engineer to join their Bing Ads platform team. This role focuses on building and maintaining high-performance advertising systems that serve billions of ad impressions daily. The position offers an opportunity to work with cutting-edge technology in the $70 billion online advertising market, developing solutions that handle terabytes of user data. The team emphasizes collaboration, innovation, and empowerment, making it an ideal environment for engineers passionate about large-scale systems. The role combines technical challenges in high QPS systems with business impact, offering competitive compensation and comprehensive benefits. Microsoft's inclusive culture and growth mindset approach make this an excellent opportunity for experienced engineers looking to make a significant impact in the advertising technology space.