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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 workBook mentoring

Speaking, mentoring, and community collaborations

Sajeetharan Sinnathurai
Recognized expertiseGoogle Developer Expert · Microsoft MVPFirst developer from Sri Lanka to earn both honors
16+ yearsbuilding for developers
Global top 10Stack Overflow expertise
Internationalspeaker and community leader
Open sourcebuilder and contributor

Working across

AzureAzure Cosmos DBGitHub CopilotCoding AgentsDeveloper ExperienceOpen Source

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

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

Grow

People and communities

I mentor engineers and product leaders, contribute to open source, and create spaces where developers can learn together.

Explore mentoring

MENTORING / REAL EXPERIENCES

Mentoring Reviews

Clearer next steps. More confidence. Hear from mentees on ADPList and Topmate.

Find your next step →

Showing 3 of 6 featured reviews.

AI & leadershipADPList (opens in a new tab)

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 managementTopmate (opens in a new tab)

He shared valuable insights about transitioning into Product Management and also recommended some useful resources to help me learn and grow.

Shruti Solanki
Career clarityADPList (opens in a new tab)

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)View on Topmate → (opens in a new tab)

Recent Talks

Turning Coding Agents into an Azure Cosmos DB Expert with the Agent Kit

Azure Developers ShowJuly 2026
Beyond CRUD: Designing MCP Tools Around Trust and Consent presentation

Beyond CRUD: Designing MCP Tools Around Trust and Consent

SessionizeLatest session
Building an Agent-First Experience for Azure Cosmos DB presentation

Building an Agent-First Experience for Azure Cosmos DB

SessionizeLatest session
View All 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

GitHub

@sajeetharan ↗

GitHub Contributions Graph
View GitHub Profile →
Stack Overflow

Stack Overflow

@sajeetharan ↗

Stack Overflow Profile
#1from Sri Lanka
Top 10Azure, Angular, Cosmos DB
View Stack Overflow Profile →