Leonard “Lenni” Lobel is a 15-year Microsoft MVP for Data Platform and the Chief Technology Officer and co-founder of Sleek Technologies, LLC. A software developer since 1979, Lenni specializes in full-stack application development, data platforms, cloud technologies, and AI, with deep expertise across the Microsoft technology stack.
His areas of expertise include:
SQL Server • Azure SQL • Azure • .NET / C# •
AI • Azure OpenAI • Vector Search & RAG •
REST / GraphQL / MCP •
HTML • JavaScript • CSS • Angular
Lenni has designed and developed solutions across a wide range of industries, including financial services, healthcare, publishing, government, wholesale and retail, and e-commerce. He has served as chief architect and lead developer for organizations ranging from small businesses to major enterprise and government clients.
In addition to software development and consulting, Lenni is an experienced trainer and frequent conference speaker. He has presented at Visual Studio Live!, PASS, Microsoft and community events, user groups, and other industry conferences, delivering technical sessions and hands-on workshops on SQL Server, Azure, .NET, and AI.
Lenni is also the author of several Microsoft Press books and Pluralsight courses on SQL Server and database programming.
Sleek Technologies, LLC 