Martin Loitzl

Martin Loitzl

Thoughts and insights in my daily life as a software engineer.

Headshot by @philipbrand

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typescript

February 2026programming

The Greenfield Sandbox: Implementing Hard Tenant Isolation and Deterministic Data at Scale

In over a decade of enterprise software development, I’ve noticed a recurring frustration: the more senior you become, the rarer it is to work on a truly "greenfield" project.

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August 2025programming

Variance and covariance explained with C#

A deep dive into variance and covariance with modern C# examples. Featuring Orwell’s Animal Farm, dependency injection scenarios, and a short detour into TypeScript.

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