Principal Software Engineer

Azure Core powers the platform that runs Microsoft Azure, from datacenter infrastructure through the services that enable customers and Microsoft products to run at global scale. The Software-Defined Datacenter team combines distributed systems, machine learning, and cross-layer optimization to improve the efficiency of Azure's fleet, including Graphics Processing Unit (GPU) capacity used for artificial intelligence inference. You will work on initiatives that reduce inference cost, improve utilization, and unlock more serving capacity from existing GPU infrastructure in close partnership with Microsoft Research, Azure Artificial Intelligence engineering teams, and Azure Core platform teams.

As a Principal Software Engineer, you will be a hands-on technical leader for GPU efficiency. You will design, build, and operate cloud-scale systems that measure, model, and optimize inference workloads across Azure, translating research ideas into reliable production services. This opportunity will allow you to deepen your expertise in artificial intelligence infrastructure, distributed systems, and fleet-wide optimization while collaborating across research, hardware, and Azure Artificial Intelligence teams.

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.

• Design, implement, and operate cloud-scale services that improve GPU inference efficiency, utilization, and cost across Azure.
• Partner with Azure Systems Research and Azure AI infrastructure teams to translate algorithms, models, and systems research into production-ready infrastructure.
• Build telemetry, experimentation, and control-plane capabilities that identify inference-efficiency opportunities and safely validate improvements at fleet scale.
• Write high-quality production code in languages such as C#, Rust, Python, or C++ with engineering practices for reliability, security, and maintainability.
• Drive architecture and technical strategy for workload placement, capacity management, performance isolation, and optimization of inference-serving systems.
• Collaborate across Azure Core, hardware, platform, and artificial intelligence teams to land cross-organizational initiatives in production.
• Mentor engineers, lead technical reviews, and help build an inclusive engineering culture focused on customer impact and operational excellence.

Required Qualifications:

Software Engineering IC5 - The typical base pay range for this role across the U.S. is USD $142,800 - $274,800 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 $188,000 - $304,200 per year.

Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here:
https://careers.microsoft.com/us/en/us-corporate-pay

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.