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Sr. Software Engineer--M365 COSMIC Team

Microsoft· Software Engineering
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Suzhou, Jiangsu, Shanghaifull-timePosted 3w ago

About the role

Senior software engineer to design and deliver platform capabilities for the COSMIC Kubernetes-based infrastructure that powers Microsoft 365 services, with a focus on distributed systems, deployment orchestration, observability, reliability, and developer productivity using Azure and cloud-native technologies.

Responsibilities

  • Own end-to-end delivery of platform features and services, including technical design, implementation, testing, rollout, and production operation.
  • Build reliable, scalable components for Kubernetes-based infrastructure, improving service deployment, lifecycle management, and operational workflows.
  • Improve engineering quality and developer productivity through automated testing, integration validation, CI/CD systems, and reusable tooling.
  • Design for security, reliability, and operability from the outset, with clear telemetry, actionable diagnostics, controlled rollouts, and recovery mechanisms.
  • Develop automation that reduces repetitive work and operational risk. Where appropriate, incorporate AI-assisted or agent-based approaches with evaluation, access controls, and human oversight.
  • Investigate complex production issues, identify root causes using telemetry, and deliver durable improvements to platform reliability and performance.
  • Partner with product managers, engineers, and service owners to clarify requirements, make technical trade-offs, and deliver measurable outcomes.
  • Participate in on-call support and incident response for the services your team owns, translating operational learnings into better software and practices.
  • Mentor engineers through design discussions and code reviews, contributing to a collaborative and inclusive engineering culture.

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.

Skills

Nice to have:Programming languagesDistributed systemsKubernetesDeployment orchestration / CI-CDObservability / incident responseAI-assisted tooling
Last updated Oct 2, 2026. Interested? Apply on the company site.

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