Hi, I'm

Marcel Roozekrans

Software Engineer · Open Source Developer · .NET enthusiast building tools, libraries, and the occasional side project.

Featured Projects

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ZMediator

A zero-allocation mediator library for .NET 10. Roslyn source generator wires all dispatch at compile time — no reflection, no dictionaries, no virtual dispatch.

.NETSource GeneratorsPerformance

MailPeek

In-memory fake SMTP server with a real-time web dashboard for ASP.NET Core. Capture emails during development and testing.

.NETSMTPDeveloper Tools

ZeroAlloc.Analyzers

Roslyn analyzers for modern .NET performance patterns with multi-TFM awareness.

.NETRoslynPerformance

Roslyn CodeLens MCP

Roslyn-based MCP server providing semantic code intelligence for .NET codebases — type hierarchies, call sites, DI registrations, and reflection usage for Claude Code.

.NETRoslynMCPAI

LongtermMemory MCP

A fully local MCP server providing AI agents with persistent semantic long-term memory using SQLite and transformer-based embeddings. No cloud dependencies.

AIMCPSQLiteTypeScript

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