Microsoft's Bing Ads team is seeking a Senior Software Engineer to work on large-scale distributed systems and ad serving platforms. The role focuses on scaling and tuning platforms to serve millions of requests per second while improving ad serving efficiency. The team is working on cutting-edge challenges in online advertising, partnering with Edge browser and Azure teams to build scalable solutions that protect user privacy while delivering relevant ads. This position offers a unique opportunity to influence technology development in a crucial growth area at Microsoft, working with top scientists and engineers across Microsoft's global R&D team. The role involves designing and implementing complex algorithms for large datasets, optimizing performance, and mentoring other engineers. Microsoft offers a collaborative environment with a growth mindset, focusing on innovation and empowerment. The position is based in Barcelona, Spain, offering comprehensive benefits and the chance to work on technology that impacts millions of users globally.