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Microsoft Corporation Logo Microsoft Corporation · IT - Software Development

Senior Software Engineer - M365 Copilot

China, Beijing · Job Posted March 21, 2026
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Job Description

We are looking for a Full-Stack Software Engineer with strong infrastructure fundamentals to design and build a scalable, reliable sandbox platform for AI Agent workloads. In this role, you will work end-to-end—from distributed backend services and Kubernetes platform architecture to developer-facing web experiences and UX. You’ll partner closely with product and design to deliver intuitive workflows, while driving production-grade reliability, security, observability, and cost efficiency across the system.

Job Responsibility

  • Architect, build, and operate a scalable and reliable sandbox infrastructure for AI Agent execution, including isolation, scheduling, lifecycle management, and resource governance
  • Design and implement distributed backend services/APIs to orchestrate high-throughput, low-latency sandbox sessions and system integrations
  • Build and optimize Kubernetes-based platform capabilities (multi-tenancy, autoscaling, networking, storage, admission control, policy enforcement)
  • Own and evolve the data layer (relational/NoSQL/cache/queue), including schema design, indexing, performance tuning, and reliability strategies (backups, replication, failover)
  • Develop full-stack features: implement secure, performant backend endpoints and build modern web UIs for platform workflows (e.g., session management, policy configuration, debugging, monitoring views)
  • Drive UX excellence: collaborate with designers and product managers, translate user needs into clear interaction flows, iterate based on feedback and usage telemetry, and maintain consistent UI patterns/design systems
  • Improve system robustness via SLO-driven engineering, capacity planning, incident response, and continuous hardening of reliability and security
  • Implement end-to-end observability (metrics, logs, traces), define dashboards/alerts, and reduce operational toil with automation and self-service tooling
  • Identify bottlenecks and lead performance/cost optimizations across compute, storage, and network
  • Maintain high engineering standards through code reviews, automated testing, CI/CD, documentation, and well-defined runbooks

Requirements

  • 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
  • Solid experience designing distributed systems (fault tolerance, scalability, consistency tradeoffs, performance, and operability)
  • Hands-on experience with Kubernetes in production (cluster architecture, networking, storage, security, scaling)
  • Solid database and data-system expertise (e.g., PostgreSQL/MySQL, NoSQL, caching, messaging/streaming) with proven performance and reliability tuning experience
  • Proficiency in at least one of: Python, C++, Rust, or Java (production-quality coding)
  • Experience with at least one major cloud platform: Azure and/or AWS (compute, networking, IAM, managed Kubernetes, storage, monitoring)
  • Solid engineering practices: testing, CI/CD, code quality, design docs, and operational ownership (on-call/incident response)
  • Ability to meet Microsoft, customer and/or government security screening requirements are required for this role
  • Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter

Nice to have

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

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