Gerrit Ohlsen

Freelance backend developer based in Cologne, building B2B SaaS integrations in Rust and Go. Uses native macOS tools daily and writes about what he actually installs and keeps, not what he demos once. Runs a small newsletter on developer tooling for the German-speaking market.

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1 article by Gerrit Ohlsen.

• Developer productivity

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  Code Refactoring Techniques That Actually Ship Clean

  June 29, 2026

  Six code refactoring techniques ranked by blast radius, with the test-first rule that makes all of them safe to run on a Monday morning.