Microsoft's Bing Ads team is seeking a Senior Software Engineer to work on large-scale distributed systems for ad serving platforms. The role focuses on scaling and optimizing systems that handle millions of requests per second in the online advertising space. You'll be working on cutting-edge privacy solutions in partnership with Edge browser and Azure teams, building scalable systems that protect user privacy while delivering relevant ads. The position offers an opportunity to influence technology development in a crucial growth area at Microsoft, working with global R&D teams on complex algorithms and large datasets. The role combines technical expertise in distributed systems with the challenge of online advertising, requiring skills in performance optimization, system design, and large-scale data processing. Microsoft offers a collaborative environment with a growth mindset, focusing on innovation and inclusion. The position is based in Barcelona, Spain, and includes comprehensive benefits and professional development opportunities. This is an ideal role for someone passionate about distributed systems, scalability challenges, and privacy-focused technology solutions.