Principal Software Engineer

Overview
The Azure Kubernetes Service (AKS) team is building a world-class managed Kubernetes platform for Linux and Windows workloads across cloud and edge environments. Our mission is to define the next generation of secure, reliable, and scalable cloud-native infrastructure on Azure.
We are seeking a Principal Software Engineer to lead the architecture and evolution of the AKS control plane. You will solve complex distributed-systems challenges across Kubernetes API servers, etcd, scheduling, controllers, networking, and control-plane lifecycle management. Your work will improve availability, performance, scalability, security, and operational resilience for millions of clusters and some of the world’s largest production and AI workloads.
You will drive designs that eliminate single points of failure, reduce customer-impacting incidents, improve failure isolation and automated recovery, and enable control planes to scale safely under rapid growth and demanding workloads. You will establish reliability engineering practices using meaningful SLIs and SLOs, capacity modeling, fault injection, observability, and data-driven incident prevention. You will also lead cross-team technical initiatives, influence upstream Kubernetes, and guide engineers through architecture, implementation, rollout, and production operations.
As AI transforms infrastructure requirements, AKS is enabling increasingly large GPU and accelerator fleets, high-throughput training and inference workloads, and AI-native applications. You will help ensure that the AKS control plane remains predictable, efficient, and resilient as these workloads push Kubernetes to new limits of scale.
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.
Responsibilities
Define and drive the architecture of highly available, secure, and scalable AKS control-plane systems.
Advance Kubernetes and critical control-plane components—including API server, etcd, and controllers.
Improve reliability through clear SLIs and SLOs, capacity planning, performance engineering, fault testing, and production telemetry.
Design automated detection, mitigation, recovery, and safe rollout mechanisms that prevent failures from becoming customer-impacting incidents.
Lead investigations of complex distributed-system failures and translate findings into durable platform improvements.
Improve engineering velocity through reusable frameworks, testing infrastructure, deployment automation, and operational tooling.
Balance long-term architectural vision with pragmatic, incremental delivery and measurable customer outcomes.
Provide technical leadership across teams, mentor engineers, and influence upstream Kubernetes and Azure platform investments.
Apply AI-assisted development and intelligent automation to engineering, diagnostics, incident response, and operational workflows.
Qualifications
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
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
OR Bachelor's Degree in Computer Science or related technical field AND 12+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
OR equivalent experience.
Experience with containers and Kubernetes, including control-plane components, scheduling, controllers, networking, storage, and workload lifecycle.
Experience building and operating reliable distributed services with observability, safe deployment, automated recovery, and incident-response practices.
Experience using GitHub Copilot or other AI-assisted engineering tools in design, implementation, testing, debugging, or operational workflows.
Networking troubleshooting skills across DNS, TCP/IP, TLS, load balancing, routing, proxies, packet capture, and connection-level telemetry.
#azurecorejobs
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.

Work arrangement
Yes