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Senior Software Engineer - M365 Copilot App Platform

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Microsoft Corporation

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Location:
United States , Redmond

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Category:
IT - Software Development

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Contract Type:
Not provided

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Salary:

119800.00 - 234700.00 USD / Year
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Job Description:

The M365 Copilot App Platform team is the team that provides the platform APIs, infrastructure and backend web server for the Microsoft 365 Copilot app. All partner teams have built their AI-enabled experiences on our platform and depend on us for their success. We own everything from the application code itself to the platform APIs to the deployment pipelines and infrastructure including the backend web server and middle-tier service that supports the application on the web, Windows, and Mac. We are seeking a highly skilled and motivated Senior Software Engineer to join our middle-tier service team within the M365 Copilot App Platform team. This team is responsible for providing the middle-tier service for Microsoft 365 Copilot web, Windows, and Mac apps which all build AI-enabled experiences within the application depend on. As a Senior Software Engineer, you will play a crucial role in developing and maintaining the middle-tier service code, deployment pipelines, and infrastructure. You will work in a fast-paced agile environment, collaborating with cross-functional teams to enable the M365 Copilot app and drive innovation. If you are passionate about AI and services and have a strong technical background, this is an excellent opportunity to make a significant impact. In this role, you will work closely with partner teams to build new additional capabilities into our platform. You will also work to help improve the application's performance and quality. The M365 Copilot App is a key component in our strategy to compete with ChatGPT, making this position critical to our success.

Job Responsibility:

  • Lead the design and implementation of new middle-tier features working with architects and other individual contributors
  • Develop and maintain the middle-tier, APIs, deployment pipelines, and infrastructure
  • Collaborate with cross-functional teams to enable the M365 Copilot app and drive innovation
  • Work closely with partner teams to build new additional capabilities into our application
  • Design, produce and deliver software to improve reliability, scalability, performance, security, efficiency, etc
  • Opportunity for full-stack development work that spans our client app and middle-tier services

Requirements:

  • Bachelor's Degree in Computer Science or related technical field AND 2+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Typescript or Python
  • OR equivalent experience
  • 4+ years of software engineering experience working on web services
  • 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:

  • 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#, JavaScript or Typescript
  • OR 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, but not limited to, C#, JavaScript or Typescript
  • OR equivalent experience
  • Strong web service skills using C#/ASP.Net, node.js, or equivalent
  • Experience with client app development using Typescript
  • Motivated and self-driven
  • Strong cross-team communication and partnership skills
  • Creativity, insightfulness, and sensitivity for a dynamic approach to problem solving

Additional Information:

Job Posted:
March 19, 2026

Employment Type:
Fulltime
Work Type:
Hybrid work
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