Principal Software Engineer(Ads Billing team)

With continued growth in digital advertising and the desire to serve advertisers from all over the world, Microsoft Ads Billing team is growing to meet new challenges and providing excellent billing experiences for global advertisers! The Ads Billing team is hiring experienced engineers to join agile and diverse engineering teams in Micro Services, Platform Development and AI powered tools/agents/MCPs.

As a Principal Software Engineer in Ads Billing team, you will work closely with PM and partner teams to address worldwide advertiser's voices, design and implement infrastructures and services with global access. This opportunity will allow you to learn deep business acumen in digital ads area and own areas including rev-rec, budget control, taxation, invoicing, finance reporting and so on, learn/explore/innovate/design/build cutting edge AI knowledges/techs/tools to enforce and optimize our systems and help global advertisers, sharpen your system developing skills, accelerate your career growth.

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.

· Take ownership of critical product and platform areas of the Ads Billing system.

· Set a high technical and quality bar for agentic systems and developer-facing tooling.

· Design and ship performant, reliable terminal experiences that developers and advertisers depend on for daily work.

· Use data, benchmarks, and direct user feedback to guide iteration and investment.

· Collaborate across org boundaries to enable other teams to build Ads products on top of a shared foundation.

· Influence architecture, technical direction, and engineering standards beyond your immediate team. 

· Acts as a Designated Responsible Individual (DRI) and work with team members by developing and following the playbook, working on call to monitor system/product/service for degradation, downtime, or interruptions, alerting stakeholders about status and initiates actions to restore system/product/service for simple and complex problems when appropriate.

Required Qualifications:

· Bachelor'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

o OR equivalent experience.

Other Requirements:

Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include but are not limited to the following specialized security screenings:

· Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter.

Preferred Qualifications:

· Master'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

o OR Bachelor's Degree in Computer Science or related technical field AND 10+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python

o OR equivalent experience.

· Hands-on experience design, building and operating AI agent/MCP in production, with direct ownership over quality, reliability, and iteration.

· Good experience building and shipping customer-facing developer interfaces/products, with depth across platform/foundation systems and user-facing experiences.

· Solid product mindset with a track record of owning ambiguous problem spaces and driving them to high-quality outcomes.

· Solid engineering fundamentals, including systems design, performance, and debugging in complex production environments.

· Experience designing, running, and optimizing evaluations for platforms,

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 aboutrequesting accommodations.