Job description

Overview As the world shifts from traditional search to agentic, conversational experiences, Microsoft is reimagining how advertising works in an AI-first world. Are you excited to help create the next-generation ad platform – one where ads are assistive, context-aware and seamlessly integrated into Copilot driven experiences across Bing, MSN and Edge? We are the engineering team behind the Bing Search Ads and the emerging Copilot Search Ads platform. We serve billions of ad impressions daily and process terabytes of real-time signals to help advertisers reach global audiences. We operate at true internet scale, driving impact in a ~$10B business that continues to grow rapidly. Our engineers and scientists work together on distributed systems, large-scale data pipelines, real-time serving, experimentation, and AI-powered decisioning. As a senior engineer in our team, you will: • Design and build high-scale low latency systems used globally every day and ensure their high reliability, security and performance • Shape brand new ad products for Search, Copilot and MSN in the AI-first world in collaboration with product, applied science and platform teams By joining our team, you will get exposure to the latest advancements in AI-driven online advertising, work with talented engineers, scientists and product leaders and grow your career while driving massive business impact. 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. Responsibilities • Build and evolve high-scale production systems powering ads in Search, Copilot and other publishers. • Design, maintain and optimize low-latency, high-availability services that serve ads in milliseconds. • Collaborate with product, applied science, and platform teams to launch new ad formats and experiences. • Improve system architecture, reliability, cost efficiency, and observability across global deployments. Qualifications 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. Preferred Qualifications: • 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. • 1+ year of DRI/Oncall experience. • Experience building high QPS low latency distributed systems. • Solid collaboration skills, working effectively with cross-functional teams. #MicrosoftAI #Ads Software Engineering IC4 - The typical base pay range for this role across the U.S. is USD $119,800 - $234,700 per year. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $160,200 - $261,000 per year. Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here: careers.microsoft.com This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled. Microsoft is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance with religious accommodations and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.

Requirements

Must-haves

As a senior engineer in our team, you will:
Design and build high-scale low latency systems used globally every day and ensure their high reliability, security and performance
Shape brand new ad products for Search, Copilot and MSN in the AI-first world in collaboration with product, applied science and platform teams
Build and evolve high-scale production systems powering ads in Search, Copilot and other publishers.
Design, maintain and optimize low-latency, high-availability services that serve ads in milliseconds.
Collaborate with product, applied science, and platform teams to launch new ad formats and experiences.
Improve system architecture, reliability, cost efficiency, and observability across global deployments.
1+ year of DRI/Oncall experience.
This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled.

Nice-to-haves

OR equivalent experience.
Experience building high QPS low latency distributed systems.
Solid collaboration skills, working effectively with cross-functional teams.
#MicrosoftAI #Ads
Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here:

Application prep

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