Chaoyi Yuan is a Senior Software Engineer at Microsoft in Shanghai with nine years of experience building cloud-native developer tools, CI/CD tasks, and full‑stack Teams apps. He has hands-on expertise in backend authentication and authorization (MSAL, token validation), package management, and IoT/DevOps automation for Azure Pipelines, contributing to high-profile repos like teams-toolkit and azure-pipelines-tasks. Comfortable across backend, frontend and deployment pipelines, he has implemented end-to-end features from APIs and DB-backed CRUD to Docker/ACR integrations and manifest generation. Known for pragmatic refactors and shipping secure, production-ready auth flows, he blends deep Microsoft platform knowledge with a habit of improving developer experience.
Scenario-focused sample applications that help you get started with building Microsoft Teams App.
Role in this project:
Full-stack Developer
Contributions:209 reviews, 19 commits, 47 PRs in 1 year 5 months
Contributions summary:Chaoyi contributed to multiple aspects of a Teams app sample, including backend API development and frontend UI modifications. They added functionality to manage and display posts, including create, read, update, and delete operations, interacting with a database. Further, they implemented a FAQ Plus sample within the repository, expanding the application's capabilities. Additionally, they made adjustments related to authentication and dependency updates, which involved various technologies.
Contributions:1506 reviews, 192 commits, 402 PRs in 1 year 9 months
Contributions summary:Chaoyi primarily contributed to the backend of the "teams-toolkit" repository, focusing on adding and enhancing authentication features. They implemented simple authentication APIs for existing .NET Core projects, incorporating functionality for token acquisition and validation. The user also addressed various issues within the simple authentication module, enabling CORS, validating access token issuers, and refactoring the codebase to use MSAL for authorization code flow. Furthermore, they updated NuGet metadata, showing a focus on package management and release processes.
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Chaoyi Yuan - Senior Software Engineer at Microsoft