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Building the modern web
I'm Steffen, a fullstack developer from Cologne. I help companies build fast, accessible, and beautiful web applications.
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Recent Writing
Carapace – A Hardened Reverse Proxy for Webhooks
How I built a security layer in Bun and TypeScript that validates, rate-limits, and forwards only safe requests to my webhook backend.
Fix Render-Blocking CSS in Nuxt 4 with the build:manifest Hook
How to correctly remove render-blocking stylesheet links in Nuxt 4 SSR and shave 500-1500ms off your FCP/LCP.
Common OpenCode Errors and How to Fix Them: Complete Troubleshooting Guide
Comprehensive troubleshooting guide covering the most frequent OpenCode errors, their root causes, and practical solutions for developers
Developer Resources
Troubleshooting guides for common errors in modern JavaScript frameworks.