Mei-Chin Tsai is a Engineering Director at Microsoft, responsible for Azure Cosmos DB developer experience. She leads the charge to evolve a frictionless developer experience for Azure Cosmos DB;  from the Software Development Kit, request routing gateway, to OSS APIs and tooling (such as Notebook and Portal). She was previously the Development Manager for .NET Runtime and C# in Microsoft’s Developer Division. Mei-Chin graduated from University of Illinois at Urbana-Champaign with a Ph.D. degree in Computer Science. She joined Microsoft in 1994 and was one of the original developers on .NET. She is passionate about scalability, performance, quality, and developer experience. She is committed in growing and mentoring people. At spare time, she loves to travel and is an avid tennis player.