Sebastian Solnica is a Polish .NET engineer and one of the most authoritative independent voices on the production-diagnostics side of .NET work — particularly the use of WinDbg, ETW, and the lower-level diagnostic tooling that separates senior .NET engineers from generic .NET developers.
His CourseFlix listing carries .NET Diagnostics Expert — a comprehensive treatment of production .NET diagnostics: memory dump analysis, performance investigation, the diagnostic-tooling landscape, and the patterns for debugging .NET issues that don't reproduce locally.
Material is paid and aimed at senior .NET engineers responsible for production .NET applications. For broader content, see CourseFlix's C# category page.
