Senior Software Engineer, Ads Infra

Do you want to utilize your knowledge of cutting-edge AI and big data to make a difference in online advertising? How about working in the beautiful Microsoft campus right in the heart of Silicon Valley, one of the most innovative R&D centers in the world? Then come to join our Microsoft Ads Team in Mountain view, California! We are looking for a Software Engineer for developing global scale streaming & AI infrastructure for multi billions Microsoft Ads business.  As a team, we leverage the diverse backgrounds and experiences of passionate engineers, scientists, and program managers to help us realize our mission to empower every person and every organization on the planet to achieve more. We believe great products are built by inclusive teams of customer-obsessed individuals who trust each other and work closely together.  We collaborate regularly across the company with teams like Bing and Microsoft Research.  If you are passionate about working on the latest and hottest areas in Artificial Intelligence, Distributed Computing, all the while making advertising better for customers across the world, then this is the team you’re looking for! Expect a fast-moving environment where balancing speed, quality, and teamwork is essential. Microsoft’s mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond.   Starting January 26, 2026, Microsoft AI (MAI) employees who live within a 50- mile commute of a designated Microsoft office in the U.S. or 25-mile commute of a non-U.S., country-specific location are expected to work from the office at least four days per week. This expectation is subject to local law and may vary by jurisdiction.

You will enhance and operate Product Ads cloud infrastructures on Azure that include areas such as advertiser facing APIs, Large Scale Data Ingestion, entities conflation, Build and optimize the system for storing and processing billions of entities daily. You will design, implement, experiment, and ship new business features to enhance/create existing/new ad products. You will use Machine Learning and AI to detect and improve ads quality. You will optimize code and evolve architectures to maximize performance and minimize cost. You will dive deep into data to find key insights that drive technical design and feature roadmaps. You will work directly with customers to resolve escalations and live sites.

Required Qualifications: Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience.

Master's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR Bachelor's Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience. 7+ years of software development experience shipping bug-free and performant code in C++, Java or C#. 2+ years of hands-on experience in online advertising systems, information retrieval systems, web search systems, big data processing pipelines, database applications, large scale internet applications, and/or distributed systems. Solid communication skills and ability to collaborate between diverse remote teams. Solid understanding of OOD, data structure, algorithm, big data processing, data streaming, information retrieval,