[Skip to main content](#__docusaurus_skipToContent_fallback) [![](/assets/ideal-img/avatar.80cf66c.310.jpg)](#slap-portrait) # Sajeetharan Sinnathurai Principal Product Manager at Microsoft ## I help developers build what's next. I work at the intersection of **developer tools, databases, and AI agents**—turning complex technology into products, guidance, and communities that help people ship with confidence. [Explore my work](/projects)[Book mentoring](/mentored) Speaking, mentoring, and community collaborations ## Nine moods, one developer Affection Recognized expertise**Google Developer Expert · Microsoft MVP**First developer from Sri Lanka to earn both honors **16+ years**building for developers [**Top 10 in key tags**Stack Overflow: Azure, Angular, Cosmos DB](https://stackoverflow.com/users/1749403/sajeetharan) **International**speaker and community leader **Open source**builder and contributor Working across AzureAzure Cosmos DBGitHub CopilotCoding AgentsDeveloper ExperienceOpen Source ## Azure, AI, and agent engineering guides Hands-on projects and lessons on Azure Cosmos DB, AI agents, Model Context Protocol, and reusable agent skills. What I do ## Build. Learn. Grow. From product strategy to working code and community education, I focus on the parts of technology that help developers move faster. Build ### Developer-first products I translate real developer needs into tools, APIs, and experiences that make complex cloud and data workflows feel simple. [View selected projects→](/projects) Teach ### Practical technical guidance I share field-tested lessons about Azure, databases, developer tooling, and coding agents through articles and talks. [Read the latest insights→](/blogs) Grow ### People and communities I mentor engineers and product leaders, contribute to open source, and create spaces where developers can learn together. [Explore mentoring→](/mentored) MENTORING / REAL EXPERIENCES ## Mentoring Reviews Clearer next steps. More confidence. Hear from mentees on ADPList and Topmate. [Find your next step →](/mentored) Showing 3 of 6 featured reviews. AI & leadership[ADPList (opens in a new tab)](https://adplist.org/mentors/sajeetharan-sinnathurai) > While navigating this rapidly changing field is challenging, his ability to turn complex concepts into clear, practical advice helped me to a great extent. **Hirish** Product management[Topmate (opens in a new tab)](https://topmate.io/sajeetharan) > He shared valuable insights about transitioning into Product Management and also recommended some useful resources to help me learn and grow. **Shruti Solanki** Career clarity[ADPList (opens in a new tab)](https://adplist.org/mentors/sajeetharan-sinnathurai) > Their exceptional knowledge and motivating words provided invaluable insights that have greatly impacted my progress. **Tharu Tharujan** More reviews & mentoring impact:[View on ADPList → (opens in a new tab)](https://adplist.org/mentors/sajeetharan-sinnathurai)[View on Topmate → (opens in a new tab)](https://topmate.io/sajeetharan) ## Upcoming Events ### WeAreDevelopers Conference India 25–26 November 2026 / Bengaluru, India [View agenda → (opens in a new tab)](https://www.wearedevelopers.com/conference-india/agenda) ## Recent Talks [ ![](https://img.youtube.com/vi/GWid8x3i9Cc/mqdefault.jpg) ### Turning Coding Agents into an Azure Cosmos DB Expert with the Agent Kit Azure Developers ShowJuly 2026 ](https://www.youtube.com/watch?v=GWid8x3i9Cc)[ ![Beyond CRUD: Designing MCP Tools Around Trust and Consent presentation](/img/talks/beyond-crud-mcp-trust-consent.jpg) ### Beyond CRUD: Designing MCP Tools Around Trust and Consent SessionizeLatest session ](https://sessionize.com/s/sajeetharan/beyond-crud-designing-mcp-tools-around-trust-and-c/188203)[ ![Building an Agent-First Experience for Azure Cosmos DB presentation](/img/talks/agent-first-cosmos-db.jpg) ### Building an Agent-First Experience for Azure Cosmos DB SessionizeLatest session ](https://sessionize.com/s/sajeetharan/building-an-agent-first-experience-for-azure-cosmo/188204) [View All Talks →](/talks) ## About Me Developer turned product leader. Community builder at heart. I'm a Principal Product Manager at Microsoft, building developer experiences around Azure Cosmos DB and AI. I share what I learn through open source, speaking, and mentoring. Read my full story Principal Product Manager with 16+ years of experience in the software industry, spanning product management and cloud platform development. I’m passionate about creating tools that empower developers, with a strong focus on developer experience and database solutions. Outside of work, I'm deeply involved in the tech community. Over the past decade, I've been the top Stack Overflow contributor from Sri Lanka and ranked in the global top 10 for Azure, Angular, and Azure Cosmos DB. As the first Google Developer Expert and Microsoft MVP in developer technologies from Sri Lanka, I actively contribute to open-source projects and speak at conferences worldwide. Interested in web development or cloud? Feel free to reach out! ## Contributions ### GitHub [@sajeetharan ↗](https://github.com/sajeetharan) ![GitHub Contributions Graph](https://ghchart.rshah.org/sajeetharan) [View GitHub Profile →](https://github.com/sajeetharan) ### Stack Overflow [@sajeetharan ↗](https://stackoverflow.com/users/1749403/sajeetharan) [![Stack Overflow Profile](https://stackoverflow.com/users/flair/1749403.png?theme=dark)](https://stackoverflow.com/users/1749403/sajeetharan) #1from Sri Lanka Top 10Azure, Angular, Cosmos DB [View Stack Overflow Profile →](https://stackoverflow.com/users/1749403/sajeetharan) ## Let's Connect Feel free to reach out on any of these platforms. I'd love to connect! [GitHub](https://github.com/sajeetharan) [Twitter](https://x.com/kokkisajee) [LinkedIn](https://www.linkedin.com/in/sajeetharan/) [Instagram](https://www.instagram.com/sajeetharan) [Ask Sajee](/contact)