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Senior Software Engineer - M365 Copilot

Microsoft

Microsoft

Software Engineering
Beijing, China · China · Jiangsu, China · Suzhou, Jiangsu, China
Posted on Feb 6, 2026
Overview
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.
Come help build the data‑driven services that support and empower Microsoft 365 Copilot.
In this role, you will work on large‑scale, distributed backend systems that construct, process, and move information to enable intelligent Copilot experiences across Microsoft 365 products. You will join a team focused on turning complex data flows into reliable, high‑throughput services that Copilot depends on at scale.


Responsibilities
  • Design, build, and maintain distributed platform services that support Microsoft 365 Copilot across multiple products.
  • Develop cloud‑native microservices using ASP.NET and related technologies.
  • Build and optimize high‑throughput processing pipelines that handle large‑scale data ingestion, transformation, and transmission between services.
  • Design and operate systems that process large volumes of data with strong guarantees around reliability, consistency, and performance.
  • Analyze end‑to‑end service and data flows to understand system behavior, bottlenecks, and failure modes.
  • Identify, troubleshoot, and resolve data processing and quality issues in production environments.
  • Partner with engineers across teams to define service interfaces, processing contracts, and scalable integration patterns.


Qualifications

Required 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.
  • Solid experience building distributed systems and service‑oriented architectures.
  • Hands‑on experience with data processing pipelines and systems that handle large‑scale data flows.
  • Proficiency in C# / ASP.NET or similar backend development frameworks.
  • Solid understanding of high‑throughput systems, including performance, reliability, and scalability trade‑offs.
  • Experience working with Microsoft Azure fundamentals, including authentication, identity, and core platform services.
Preferred Qualifications:
  • 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.
  • Experience designing or operating big data systems, including large‑scale storage, processing, or distributed computation.
  • Familiarity with microservice‑based data processing architectures in cloud environments.
  • Understanding of service‑to‑service data exchange, flow control, and fault tolerance.
  • Experience debugging complex issues in distributed, data‑intensive production systems.
  • Solid analytical and problem‑solving skills, with clear technical communication.

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.